1.
Movable Type
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Movable type is the system and technology of printing and typography that uses movable components to reproduce the elements of a document usually on the medium of paper. In 1377, currently the oldest extant movable metal print book, the diffusion of both movable-type systems was, however, limited. Around 1450 Johannes Gutenberg made another version of a metal printing press in Europe, along with innovations in casting the type based on a matrix. The more limited number of characters needed for European languages was an important factor, Gutenberg was the first to create his type pieces from an alloy of lead, tin, and antimony—and these materials remained standard for 550 years. For alphabetic scripts, movable-type page setting was quicker than woodblock printing, the metal type pieces were more durable and the lettering was more uniform, leading to typography and fonts. The high quality and relatively low price of the Gutenberg Bible established the superiority of movable type in Europe, the printing press may be regarded as one of the key factors fostering the Renaissance and due to its effectiveness, its use spread around the globe. The 19th-century invention of hot metal typesetting and its successors caused movable type to decline in the 20th century, the technique of imprinting multiple copies of symbols or glyphs with a master type punch made of hard metal first developed around 3000 BC in ancient Sumer. These metal punch types can be seen as precursors of the letter punches adapted in later millennia to printing with metal type. Cylinder seals were used in Mesopotamia to create an impression on a surface by rolling the seal on wet clay and they were used to sign documents and mark objects as the owners property. By 650 BC the ancient Greeks were using larger diameter punches to imprint small page images onto coins and tokens, seals and stamps may have been precursors to movable type. A few authors even view the disc as technically meeting all definitional criteria to represent an early incidence of movable-type printing, recently it has been alleged by Jerome Eisenberg that the disk is a forgery. The Prüfening dedicatory inscription is medieval example of movable type stamps being used, yet copying books by hand was still labour-consuming. Not until the Xiping Era, towards the end of the Eastern Han Dynasty did sealing print and it was soon used for printing designs on fabrics, and later for printing texts. Woodblock printing, invented by about the 8th century during the Tang Dynasty, then carvers cut away the parts of the board that were not part of the character, so that the characters were cut in relief, completely differently from those cut intaglio. When printing, the characters would have some ink spread on them. With workers’ hands moving on the back of paper gently, characters would be printed on the paper, by the Song Dynasty, woodblock printing came to its heyday. Although woodblock printing played a role in spreading culture, there remained some apparent drawbacks. Firstly, carving the printing plate required considerable time, labour and materials, secondly, it was not convenient to store these plates, with woodblock printing, one printing plate could be used for tens of hundreds of books, playing a magnificent role in spreading culture
2.
History of printing
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The history of printing goes back to the duplication of images by means of stamps in very early times. In both China and Egypt, the use of stamps for seals preceded the use of larger blocks. In China, India and Europe, the printing of cloth certainly preceded the printing of paper or papyrus, the process is essentially the same - in Europe special presentation impressions of prints were often printed on silk until the seventeenth century. Block printing is a technique for printing text, images or patterns used widely throughout East Asia both as a method of printing on textiles and later, under the influence of Buddhism, on paper. As a method of printing on cloth, the earliest surviving examples from China date to about 220, ukiyo-e is the best known type of Japanese woodblock art print. Most European uses of the technique on paper are covered by the term woodcut, the worlds earliest printer printed fragments to survive are from China and are of silk printed with flowers in three colours from the Han Dynasty. It reached Europe, via the Islamic world, and by around 1400 was being used on paper for old master prints, the third oldest wood-block printed book ever found after Mugujeonggwang great Dharani sutraand Hyakumantō Darani is the Diamond Sutra. It carries a date of the 13th day of the moon of the ninth year of the Xiantong era. A number of printed dhāraṇīs, however, predate the Diamond Sūtra by about two hundred years, in Buddhism, great merit is thought to accrue from copying and preserving texts. The fourth-century master listed the copying of scripture as the first of ten essential religious practices and this ‘cult of the book’ led to techniques for reproducing texts in great numbers, especially the short prayers or charms known as dhāraṇīs. Stamps were carved for printing these prayers on clay tablets from at least the seventh century, especially popular was the Pratītyasamutpāda Gāthā, a short verse text summing up Nāgārjunas philosophy of causal genesis or dependent origination. Nagarjuna lived in the centuries of the current era and the Buddhist Creed. This tradition was transmitted to China and Tibet with Buddhism, Printing text from woodblocks does not, however, seem to have been developed in India. Printing with a press was practiced in Christian Europe as a method for printing on cloth and these prints were produced in very large numbers from about 1425 onwards. Around the mid-century, block-books, woodcut books with text and images, usually carved in the same block, emerged as a cheaper alternative to manuscripts. These were all heavily illustrated works, the bestsellers of the day, repeated in many different block-book versions, the Ars moriendi. In Europe, from about 1450 they were commonly used to colour old master prints printed in black and white. This was especially the case with playing-cards, which continued to be coloured by stencil long after most other subjects for prints were left in black, stenciling back in the 27th century BCE was different
3.
Woodblock printing
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Woodblock printing is a technique for printing text, images or patterns used widely throughout East Asia and originating in China in antiquity as a method of printing on textiles and later paper. Ukiyo-e is the best known type of Japanese woodblock art print, most European uses of the technique for printing images on paper are covered by the art term woodcut, except for the block-books produced mainly in the 15th century. Prior to the invention of printing, seals and stamps were used for making impressions. The oldest of these came from Mesopotamia and Egypt. A few much larger brick stamps for marking clay bricks survive from Akkad from around 2270 BC. There are also Roman lead pipe inscriptions of some length that were stamped, however none of these used ink, which is necessary for printing, but stamped marks into relatively soft materials. In both China and Egypt, the use of stamps for seals preceded the use of larger blocks. In Europe and India, the printing of cloth certainly preceded the printing of paper or papyrus, the process is essentially the same—in Europe special presentation impressions of prints were often printed on silk until at least the 17th century. The block was cut along the grain of the wood and it is necessary only to ink the block and bring it into firm and even contact with the paper or cloth to achieve an acceptable print. The content would of course print in reverse or mirror-image, a further complication when text was involved, the art of carving the woodcut is technically known as xylography, though the term is rarely used in English. For colour printing, multiple blocks are used, each for one colour, multiple colours can be printed by keying the paper to a frame around the woodblocks. There are three methods of printing to consider, Stamping Used for many fabrics, and most early European woodcuts. These items were printed by putting paper or fabric on a table or a surface with the block on top, and pressing, or hammering. Rubbing Apparently the most common for Far Eastern printing, Used for European woodcuts and block-books later in the 15th century, and very widely for cloth. The block is placed face side up on a table, with the paper or fabric on top, the back of the paper or fabric is rubbed with a hard pad, a flat piece of wood, a burnisher, or a leather frotton. Printing in a press Presses only seem to have used in Asia in relatively recent times. Simple weighted presses may have used in Europe, but firm evidence is lacking. A deceased Abbess of Mechelen in Flanders in 1465 had unum instrumentum ad imprintendum scripturas et ymagines, cum 14 aliis lapideis printis which is probably too early to be a Gutenberg-type printing press in that location
4.
Printing press
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A printing press is a device for applying pressure to an inked surface resting upon a print medium, thereby transferring the ink. The printing press was invented in the Holy Roman Empire by the German Johannes Gutenberg around 1440, the printing press spread within several decades to over two hundred cities in a dozen European countries. By 1500, printing presses in operation throughout Western Europe had already produced more than twenty million volumes, in the 16th century, with presses spreading further afield, their output rose tenfold to an estimated 150 to 200 million copies. The operation of a press became so synonymous with the enterprise of printing that it lent its name to a new branch of media. The sharp rise of learning and literacy amongst the middle class led to an increased demand for books which the time-consuming hand-copying method fell far short of accommodating. Technologies preceding the press led to the presss invention included, manufacturing of paper, development of ink, woodblock printing. At the same time, a number of products and technological processes had reached a level of maturity which allowed their potential use for printing purposes. The device was used from very early on in urban contexts as a cloth press for printing patterns. Gutenberg may have also inspired by the paper presses which had spread through the German lands since the late 14th century. Gutenberg adopted the design, thereby mechanizing the printing process. Printing, however, put a demand on the quite different from pressing. Gutenberg adapted the construction so that the power exerted by the platen on the paper was now applied both evenly and with the required sudden elasticity. To speed up the process, he introduced a movable undertable with a plane surface on which the sheets could be swiftly changed. The known examples range from Germany to England to Italy, however, the various techniques employed did not have the refinement and efficiency needed to become widely accepted. Gutenberg greatly improved the process by treating typesetting and printing as two separate work steps, a goldsmith by profession, he created his type pieces from a lead-based alloy which suited printing purposes so well that it is still used today. The mass production of metal letters was achieved by his key invention of a hand mould. Another factor conducive to printing arose from the existing in the format of the codex. Considered the most important advance in the history of the prior to printing itself
5.
Etching
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Etching is traditionally the process of using strong acid or mordant to cut into the unprotected parts of a metal surface to create a design in intaglio in the metal. In modern manufacturing, other chemicals may be used on other types of material, as a method of printmaking, it is, along with engraving, the most important technique for old master prints, and remains in wide use today. In a number of variants such as microfabrication etching and photochemical milling it is a crucial technique in much modern technology. In traditional pure etching, a plate is covered with a waxy ground which is resistant to acid. The artist then scratches off the ground with an etching needle where he or she wants a line to appear in the finished piece. The échoppe, a tool with an oval section, is also used for swelling lines. The plate is dipped in a bath of acid, technically called the mordant or etchant. The acid bites into the metal where it is exposed, leaving behind lines sunk into the plate, the remaining ground is then cleaned off the plate. The plate is inked all over, and then the ink wiped off the surface, the plate is then put through a high-pressure printing press together with a sheet of paper. The paper picks up the ink from the lines, making a print. The process can be repeated many times, typically several hundred impressions could be printed before the shows much sign of wear. The work on the plate can also be added to by repeating the whole process, Etching has often been combined with other intaglio techniques such as engraving or aquatint. The process as applied to printmaking is believed to have been invented by Daniel Hopfer of Augsburg, Hopfer was a craftsman who decorated armour in this way, and applied the method to printmaking, using iron plates. Apart from his prints, there are two examples of his work on armour, a shield from 1536 now in the Real Armeria of Madrid. The switch to copper plates was made in Italy. On the other hand, the handling of the ground and acid need skill and experience, prior to 1100 AD, the New World Hohokam independently utilized the technique of acid etching in marine shell designs. Jacques Callot from Nancy in Lorraine made important technical advances in etching technique and he developed the échoppe, a type of etching-needle with a slanting oval section at the end, which enabled etchers to create a swelling line, as engravers were able to do. Callot also appears to have responsible for an improved, harder, recipe for the etching ground
6.
Mezzotint
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Mezzotint is a printmaking process of the intaglio family, technically a drypoint method. It was the first tonal method to be used, enabling half-tones to be produced without using line- or dot-based techniques like hatching, cross-hatching or stipple. Mezzotint achieves tonality by roughening the plate with thousands of little dots made by a tool with small teeth. In printing, the pits in the plate hold the ink when the face of the plate is wiped clean. A high level of quality and richness in the print can be achieved, the mezzotint printmaking method was invented by the German amateur artist Ludwig von Siegen. His earliest mezzotint print dates to 1642 and is a portrait of Countess Amalie Elisabeth of Hanau-Münzenberg and this was made by working from light to dark. The rocker seems to have been invented by Prince Rupert of the Rhine, a cavalry commander in the English Civil War, who was the next to use the process. Sir Peter Lely saw the potential for using it to publicise his portraits, the process was especially widely used in England from the mid-eighteenth century, to reproduce portraits and other paintings. Since the mid-nineteenth century it has relatively little used. Robert Kipniss and Peter Ilsted are two notable 20th-century exponents of the technique, M. C, British mezzotint collecting was a great craze from about 1760 to the Great Crash of 1929, also spreading to America. The favourite period to collect was roughly from 1750 to 1820, leading collectors included William Eaton, 2nd Baron Cheylesmore and the Irishman John Chaloner Smith. This became the most common method, the whole surface of a metal, usually copper, plate is roughened evenly, manually with a rocker, or mechanically. If the plate were printed at this point it would show as solid black, a burnisher has a smooth, round end, which flattens the minutely protruding points comprising the roughened surface of the metal printing plate. Areas smoothed completely flat will not hold ink at all, such areas will print white, by varying the degree of smoothing, mid-tones between black and white can be created, hence the name mezzo-tinto which is Italian for half-tone or half-painted. This is called working from dark to light, or the subtractive method, alternatively, it is possible to create the image directly by only roughening a blank plate selectively, where the darker parts of the image are to be. This is called working from light to dark, or the additive method, the first mezzotints by Ludwig von Siegen were made in this way. Especially in this method, the mezzotint can be combined with other techniques, such as engraving, on areas of the plate not roughened. The plate is put through a printing press next to a sheet of paper
7.
Aquatint
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Aquatint is an intaglio printmaking technique, a variant of etching. In intaglio printmaking, the artist makes marks on the plate that are capable of holding ink, the inked plate is passed through a printing press together with a sheet of paper, resulting in a transfer of the ink to the paper. This can be repeated a number of times, depending on the particular technique, like etching, aquatint uses the application of a mordant to etch into the metal plate. Where the engraving uses a needle to make lines that print in black. The rosin is acid resistant and typically adhered to the plate by controlled heating, the tonal variation is controlled by the level of mordant exposure over large areas, and thus the image is shaped by large sections at a time. Another tonal technique, mezzotint, begins with a surface that is evenly indented so that it will carry a fairly dark tone of ink. The mezzotint plate is then smoothed and polished to make areas carry less ink, alternatively, beginning with a smooth plate, areas are roughened to make them darker. Occasionally these two techniques are combined, the painter and printmaker Jan van de Velde IV invented the aquatint technique in Amsterdam, around 1650. The cartographer Peter Perez Burdett later introduced his secret aquatint technique to England in the 1770s, an aquatint requires a metal plate, an acid, and something to resist the acid. Traditionally copper or zinc plates were used, the artist applies a ground that will resist acid. Ground is applied by either dissolving powdered resin in spirits, applying the powder directly to the surface of the plate, in all forms of etching the acid resist is commonly referred to as the ground. An aquatint box is used to apply resin powder, the powder is at the bottom of the box, a crank or a bellows is used to blow the powder up into the air of the box. A window allows the engraver to see the density of flowing powder, when the powder covers the plate, it can be extracted from the box for the next operations. The plate is then heated, if the plate is covered with powder, the resin melts forming a fine and even coat, if it is in spirits, the spirits evaporate and the result is essentially the same. Now the plate is dipped in acid, producing an even, at this point, the plate is said to carry about a 50% halftone. This means that, were the plate printed with no further biting, at some point the artist will then etch an outline of any aspects of the drawing s/he wishes to establish with line, this provides the basis and guide for the later tone work. S/he may also have applied an acid-resistant stop out if s/he intends to keep any areas totally white and free of ink, the artist then begins immersing the plate in the acid bath, progressively stopping out any areas that have achieved the designed tonality. These tones, combined with the limited line elements, give aquatints a distinctive, also, aquatints, like mezzotints, provide ease in creating large areas of tone without laborious cross-hatching, but aquatint plates, it is noted, are generally more durable than mezzotint plates
8.
Lithography
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Lithography is a method of printing originally based on the immiscibility of oil and water. The printing is from a stone or a plate with a smooth surface. It was invented in 1796 by German author and actor Alois Senefelder as a method of publishing theatrical works. Lithography can be used to print text or artwork onto paper or other suitable material, Lithography originally used an image drawn with oil, fat, or wax onto the surface of a smooth, level lithographic limestone plate. The stone was treated with a mixture of acid and gum arabic, when the stone was subsequently moistened, these etched areas retained water, an oil-based ink could then be applied and would be repelled by the water, sticking only to the original drawing. The ink would finally be transferred to a paper sheet. This traditional technique is used in some fine art printmaking applications. In modern lithography, the image is made of a coating applied to a flexible aluminum plate. The image can be printed directly from the plate, or it can be offset, by transferring the image onto a sheet for printing. In fact, photolithography is used synonymously with offset printing, the technique as well as the term were introduced in Europe in the 1850s. Beginning in the 1960s, photolithography has played an important role in the fabrication, Lithography uses simple chemical processes to create an image. For instance, the part of an image is a water-repelling substance. Thus, when the plate is introduced to a printing ink and water mixture, the ink will adhere to the positive image. This allows a flat print plate to be used, enabling much longer, Lithography was invented by Alois Senefelder in the Kingdom of Bavaria in 1796. In the early days of lithography, a piece of limestone was used. After the oil-based image was put on the surface, a solution of gum arabic in water was applied, during printing, water adhered to the gum arabic surfaces and was repelled by the oily parts, while the oily ink used for printing did the opposite. Lithography works because of the repulsion of oil and water. The image is drawn on the surface of the print plate with a fat or oil-based medium such as a wax crayon, which may be pigmented to make the drawing visible
9.
Chromolithography
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Chromolithography is a unique method for making multi-colour prints. This type of colour printing stemmed from the process of lithography, when chromolithography is used to reproduce photographs, the term photochrome is frequently used. Lithographers sought to find a way to print on flat surfaces with the use of chemicals instead of relief or intaglio printing, hand-colouring also remained important, elements of the official British Ordnance Survey maps were coloured by hand by boys until 1875. The initial technique involved the use of multiple lithographic stones, one for each colour, depending on the number of colours present, a chromolithograph could take months to produce, by very skilled workers. However much cheaper prints could be produced by simplifying both the number of used, and the refinement of the detail in the image. Cheaper images, like advertisements, relied heavily on a black print. The process is based on the rejection of grease by water, the image is applied to stone, grained zinc or aluminium surfaces, with a grease-based crayon or ink. Limestone and zinc are two commonly used materials in the production of chromolithographs, as aluminium unfortunately corrodes easily, after the image is drawn onto one of these surfaces, the image is gummed-up with a gum arabic solution and weak nitric acid to desensitize the surface. Before printing, the image is proved before finally inking up the image with oil based transfer or printing ink, the inked image under pressure is transposed onto a sheet of paper using a flat-bed press. This describes the form of printing. The offset indirect method uses a cylinder that transfers the image from printing surface to the paper. Colours may be overprinted by using stones or plates to achieve a closer reproduction of the original. Accurate registration for multi-coloured work is achieved by the use of a key outline image, ben-Day medium, uses a raised gelatin stipple image to give tone gradation. An air-brush sprays ink to give soft edges and these are just two methods used to achieve gradations of tone. The use of twelve overprinted colours would not be considered unusual, each sheet of paper will therefore pass through the printing press as many times as there are colours in the final print. In order that each colour is placed in the position, each stone or plate must be precisely ‘registered, ’ or lined up. Chromolithographs are considered to be reproductions that are smaller than double demi, autolithographs are prints where the artist draws and perhaps prints his or her own limited number of reproductions. This is the true art form
10.
Rotary printing press
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A rotary printing press is a printing press in which the images to be printed are curved around a cylinder. Printing can be done on a number of substrates, including paper, cardboard. Substrates can be sheet feed or unwound on a continuous roll through the press to be printed, printing presses that use continuous rolls are sometimes referred to as web presses. William Nicholson filed a 1790 patent for a rotary press, the rotary press itself is an evolution of the cylinder press, also patented by William Nicholson and invented by Friedrich Koenig. Rotary drum printing was invented by Richard March Hoe in 1843, some sources describe the Parisian Hippolyte Auguste Marinoni as the inventor of the Rotary printing press, but this was the subject of a patent dispute that was decided in Hoes favor. A. S. Abell of the Baltimore Sun was the first American user of the rotary press, today, there are three main types of rotary presses, offset, rotogravure, and flexo. While the three types use cylinders to print, they vary in their method, offset lithography uses a chemical process in which an image is chemically applied to a plate. Lithography is based on the fact that water and oil do not mix, in the context of a printing plate, a wettable surface may also be termed hydrophilic and a non-wettable surface hydrophobic. Gravure is a process in which cells or holes are etched into a copper cylinder. All the colours are etched in different angles, thus while printing every colour is placed in position to give the appropriate image. Flexography is a system in which a raised image is created on a typically polymer based plate. In stamp collecting, rotary-press-printed stamps are sometimes a different size than stamps printed with a flat plate and this happens because the stamp images are further apart on a rotary press, which makes the individual stamps larger
11.
Hectograph
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While the original use of the technology has diminished, it has recently been revived for use in the art world. The hectograph has been modernized and made practical for anyone to use, the special aniline dyes for making the master image came in the form of ink or in pens, pencils, carbon paper and even typewriter ribbon. Hectograph pencils and pens are still available. Various other inks have been found usable to varying degrees in the process, unlike a spirit duplicator master, a hectograph master is not a mirror image. The master is placed on the gelatin and spirits applied to transfer the ink from the master to the gelatin, after transfer of the image to the inked gelatin surface, copies are made by pressing paper against it. When a pad ceased to be useful, the gelatin could be soaked with spirits and the ink could be sponged away, a grey-colored, thick, absorbent paper pad was supplied to cover the gelatin surface for storage. This also removed ink from the surface, but took hours to do so. Care needed to be taken that the surface was kept clean. The gelatin process produced print runs of somewhere between 20 and 80 copies, depending upon the skill of the user and the quality of the original. At least eight different colors of ink were available at one time. Hectography, requiring limited technology and leaving few traces behind, has deemed useful both in low-technology environments and in clandestine circumstances where discretion was necessary. In the earlier 20th century, the process lent itself to small runs of school classroom test papers, church newsletters, prisoners-of-war at Stalag Luft III and at Colditz Castle during World War II used an improvised hectograph to reproduce documents for a planned escape attempt. It has also used, though not very extensively, as an artistic medium in printmaking. The Russian Futurists used it for book illustrations, and the German expressionist Emil Nolde made four hectographs, stephen King, in his book On Writing, talks about how he and his older brother Dave used the process to create their newspaper, Daves Rag. Before the popularization of spirit duplicators and the mimeograph, there were mechanized hectography machines that used a drum, in the final chapters of The Pothunters by P. G. Wodehouse the major characters use a jellygraph to produce a school magazine at very short notice. Wodehouse assumes his reader knows exactly what a jellygraph is and alludes to its being unattractive, I think well keep to print in future. The young, even those who had been too young to fight, were in a bad temper with their elders, as well they might be, meanwhile the old—those over sixty, say—were running in circles like hens, squawking about subversive ideas. Gordon and his friends had quite a time with their subversive ideas
12.
Offset printing
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Offset printing is a commonly used printing technique in which the inked image is transferred from a plate to a rubber blanket, then to the printing surface. The modern web process feeds a large reel of paper through a press machine in several parts, typically for several metres. Development of the press came in two versions, in 1875 by Robert Barclay of England for printing on tin, and in 1904 by Ira Washington Rubel of the United States for printing on paper. Lithography was initially created to be a method of reproducing artwork. This printing process was limited to use on flat, porous surfaces because the plates were produced from limestone. In fact, the word lithograph historically means an image from stone or printed from stone, tin cans were popular packaging materials in the 19th century, but transfer technologies were required before the lithographic process could be used to print on the tin. The first rotary offset lithographic printing press was created in England and this development combined mid-19th century transfer printing technologies and Richard March Hoes 1843 rotary printing press—a press that used a metal cylinder instead of a flat stone. The offset cylinder was covered with specially treated cardboard that transferred the image from the stone to the surface of the metal. Later, the covering of the offset cylinder was changed to rubber. As the 19th century closed and photography became popular, many lithographic firms went out of business, photoengraving, a process that used halftone technology instead of illustration, became the primary aesthetic of the era. Many printers, including Ira Washington Rubel of New Jersey, were using the low-cost lithograph process to produce copies of photographs, Rubel discovered in 1901—by forgetting to load a sheet—that when printing from the rubber roller, instead of the metal, the printed page was clearer and sharper. After further refinement, the Potter Press printing Company in New York produced a press in 1903, by 1907 the Rubel offset press was in use in San Francisco. The Harris Automatic Press Company also created a similar press around the same time, charles and Albert Harris modeled their press on a rotary letter press machine. One of the most important functions in the process is prepress production. This stage makes sure that all files are processed in preparation for printing. This includes converting to the proper CMYK color model, finalizing the files, Offset lithography is one of the most common ways of creating printed materials. A few of its common applications include, newspapers, magazines, brochures, stationery, compared to other printing methods, offset printing is best suited for economically producing large volumes of high quality prints in a manner that requires little maintenance. Many modern offset presses use computer-to-plate systems as opposed to the older computer-to-film work flows, advantages of offset printing compared to other printing methods include, consistent high image quality
13.
Hot metal typesetting
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In printing and typography, hot metal typesetting refers to technologies for typesetting text in letterpress printing. This method injects molten type metal into a mold that has the shape of one or more glyphs, the resulting sorts and slugs are later used to press ink onto paper. Two different approaches to mechanising typesetting were independently developed in the late 19th century, one, known as the Monotype composition caster system, produced texts with the aid of perforated paper-ribbons, all characters are cast separate. These machines could produce texts also in large-composition up to 24 point, the Super-caster, another machine produced by Monotype, was similar in function to the Thompson, Bath, pivotal and others casters but designed to produce single type for hand setting. The other approach was to cast complete lines as one slug, in this way headings could be produced to complement text produced on other machines. There is another difference between Monotype and all the slug-producing machines, a Monotype machine functions with a minimal set of matrices. Linecasters cannot function this way, and these systems need quite large magazines of matrices to be able to set a line of text with the usual character repetitions. The key feature of the Linotype is the use of molds which circulate through the machine in its various stages of operation, one type is a space band and the other is a letter matrix made of brass. The matrices are stored in one or more magazines on top of the machine while the bands are stored in a box closer to the keyboard. When the space band key near the keyboard is pressed, one of the space bands drops out of the box, the assembling elevator is adjustable for different lengths of line. Once the line approaches its correct length, the operator is aware of this by a bell or other indicator. If the line is ‘tight’ or too long, the carrying the matrices. Both scenarios, if not stopped by these safety features, usually result in a “squirt” of molten metal, encasing the matrices. Not only is it time-consuming to clean up after a squirt, therefore, it is considered very poor form for an operator to permit this to happen. When the line is assembled to the length, the operator presses down on a lever which raises the assembling elevator up into the delivery channel. The delivery channel transfers the matrices out of the assembler and into the first elevator, if the justification bar has made a full cycle and the line is still not fully justified, the second safety—the pump stop—prevents the plunger in the metal pot from going down. The space bands were an important feature of this machine, providing automatic justification of each line by equally adjusting the space between each word. Since the type used was proportional and not fixed in width, some later models had a feature that permitted the lines to be cast with the alignment to either left, right or centered
14.
Mimeograph
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The stencil duplicator or mimeograph machine is a low-cost duplicating machine that works by forcing ink through a stencil onto paper. The mimeograph process should not be confused with the spirit duplicator process, mimeographs, along with spirit duplicators and hectographs, were a common technology in printing small quantities, as in office work, classroom materials, and church bulletins. Early fanzines were printed with this technology, because it was widespread, in the late 1960s, mimeographs, spirit duplicators, and hectographs began to be gradually displaced by photocopying. Its earliest form was invented in 1874 by Eugenio de Zuccato, a young Italian studying law in London, zuccato’s system involved writing on a sheet of varnished paper with caustic ink, which ate through the varnish and paper fibers, leaving holes where the writing had been. This sheet – which had now become a stencil – was placed on a sheet of paper. The process was commercialized and Zuccato applied for a patent in 1895 having stencils prepared by typewriting, thomas Edison received US patent 180,857 for Autographic Printing on August 8,1876. The patent covered the electric pen, used for making the stencil, the word mimeograph was first used by Albert Blake Dick when he licensed Edisons patents in 1887. Dick received Trademark Registration no.0356815 for the term Mimeograph in the US Patent Office and it is currently listed as a dead entry, but shows the A. B. Dick Company of Chicago as the owner of the name. Over time, the term became generic and is now an example of a genericized trademark, in 1891, David Gestetner patented his Automatic Cyclostyle. This was one of the first rotary machines that retained the flatbed and this invention provided for more automated, faster reproductions since the pages were produced and moved by rollers instead of pressing one single sheet at a time. By 1900, two types of mimeographs had come into use, a single-drum machine and a dual-drum machine. The single-drum machine used a drum for ink transfer to the stencil. The single drum machine could be used for multi-color work by changing the drum - each of which contained ink of a different color. This was spot color for mastheads, the mimeograph became popular because it was much cheaper than traditional print - there was neither typesetting nor skilled labor involved. One individual with a typewriter and the equipment became his own printing factory. The image transfer medium was originally a stencil made from waxed mulberry paper, later this became an immersion-coated long-fibre paper, with the coating being a plasticized nitrocellulose. This flexible waxed or coated sheet is backed by a sheet of card stock. Once prepared, the stencil is wrapped around the drum of the rotary machine
15.
Photostat machine
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The Photostat machine, or Photostat, was an early projection photocopier created in the decade of the 1900s by the Commercial Camera Company, which became the Photostat Corporation. The Photostat name, which was originally a trademark of the company, became genericized, the growth of business during the industrial revolution created the need for a more efficient means of transcription than hand copying. Carbon paper was first used in the early 19th century, by the late 1840s copying presses were used to copy outgoing correspondence. One by one, other methods appeared and these included the manifold writer, developed from Christoph Scheiners pantograph and used by Mark Twain, copying baths, copying books, and roller copiers. Among the most significant of them was the Blue process in the early 1870s, stencil duplicators surfaced in 1874, and the Cyclostyle in 1891. All were manual and most involved messy fluids, the Rectigraph Company was acquired by the Haloid Company in 1935. In 1948 Haloid purchased the rights to produce Chester Carlsons xerographic equipment and in 1958 the firm was reorganized to Haloid Xerox, Haloid continued selling Rectigraph machines into the 1960s. The Photostat brand machine, differing in operation from the Rectigraph, a directory of the city from 1909 shows his Gregory Commercial Camera Company. By 1910, Gregory had co-filed a patent application with Norman W, by 1912, Photostat brand machines were in use, as evidenced by a record of one at the New York Public Library. By 1913, advertisements described the Commercial Camera Company as headquartered at Rochester, the pair filed another U. S. patent application in 1913 further developing their ideas. By 1920, distribution agency in various European markets was by the Alfred Herbert companies, for at least 40 years the brand was widespread enough that its name was genericized by the public. The Photostat Corporation was eventually absorbed by Itek in 1963, a prism was placed in front of the lens to reverse the image. After a 10-second exposure, the paper was directed to developing and fixing baths, the result was a negative print, which took about two minutes in total to produce, which could in turn be photographed to make any number of positive prints. The photographic prints produced by such machines are referred to as photostats. People who operated these machines were known as photostat operators and it was the expense and inconvenience of photostats that drove Chester Carlson to study electrophotography. In the mid-1940s Carlson sold the rights to his invention – which became known as xerography – to the Haloid Company and photostatting soon sank into history
16.
Screen printing
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Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen to fill the open mesh apertures with ink, and this causes the ink to wet the substrate and be pulled out of the mesh apertures as the screen springs back after the blade has passed. Screen printing is also a method of print making in which a design is imposed on a screen of polyester or other fine mesh. Ink is forced into the mesh openings by the blade or squeegee and by wetting the substrate. As the screen away from the substrate the ink remains on the substrate. It is also known as silk-screen, screen, serigraphy, one color is printed at a time, so several screens can be used to produce a multicoloured image or design. There are various terms used for what is essentially the same technique, traditionally the process was called screen printing or silkscreen printing because silk was used in the process prior to the invention of polyester mesh. Currently, synthetic threads are used in the screen printing process. The most popular mesh in general use is made of polyester, there are special-use mesh materials of nylon and stainless steel available to the screen printer. There are also different types of mesh size which will determine the outcome, Screen printing first appeared in a recognizable form in China during the Song Dynasty. It was then adapted by other Asian countries like Japan, and was furthered by creating newer methods, Roy Beck, Charles Peter and Edward Owens studied and experimented with chromic acid salt sensitized emulsions for photo-reactive stencils. Commercial screen printing now uses sensitizers far safer and less toxic than bichromates, currently there are large selections of pre-sensitized and user mixed sensitized emulsion chemicals for creating photo-reactive stencils. Serigraphy is a word formed from Latin sēricum and Greek graphein. The Printers National Environmental Assistance Center says Screenprinting is arguably the most versatile of all printing processes, credit is generally given to the artist Andy Warhol for popularising screen printing as an artistic technique, identified as serigraphy, in the United States. Sister Mary Corita Kent, gained fame for her vibrant serigraphs during the 1960s and 1970s. Her works were rainbow colored, contained words that were political and fostered peace and love and caring. American entrepreneur, artist and inventor Michael Vasilantone started to use, develop, Vasilantone later filed for patent on his invention in 1967 granted number 3,427,964 on February 18,1969. The original machine was manufactured to print logos and team information on bowling garments, the Vasilantone patent was licensed by multiple manufacturers, the resulting production and boom in printed T-shirts made this garment screen printing machine popular
17.
Spirit duplicator
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A spirit duplicator was a printing method invented in 1923 by Wilhelm Ritzerfeld and commonly used for much of the rest of the 20th century. The term spirit refers to the alcohols which were a major component of the solvents used as inks in these machines. The device coexisted alongside the mimeograph, the spirit duplicator was invented in 1923 by Wilhelm Ritzerfeld. In both cases the trademark became a name for both the copiers and the process in their respective markets. Spirit duplicator technology gradually fell into disuse starting in the 1970s after the availability of low-cost, by the turn of the 21st century, the use of the technology was rare. The technology remains useful where electrical power is unavailable, or where the only remaining originals of legacy documents requiring duplication are in spirit master form. Tattoo artists use the master copies these machines produce as the design makes a very durable print on the skin that resists smudging as excess ink is wiped off during the process. The faintly sweet aroma of pages fresh off the duplicator was a feature of school life in the spirit-duplicator era. A pop culture reference to the aroma can be found in the 1982 film Fast Times At Ridgemont High, at one point a teacher distributes a duplicated schedule of class quizzes, and almost every student immediately lifts it to his or her nose and inhales. The rest of the follow suit seconds later. The duplicator used two-ply spirit masters, the first sheet could be typed, drawn, or written upon. The second sheet was coated with a layer of wax that had been impregnated with one of a variety of colorants. The pressure of writing or typing on the first sheet transferred the colored wax from the sheet to the shiny/coated back side of the first sheet. This produced the result of a sheet of carbon paper put in backwards. The two sheets were separated, and the first sheet was fastened onto the drum of the machine, with the back side facing out. There is no separate ink used in spirit duplication, as the wax transferred to the side of the first sheet contained the ink. As the paper to be printed moved through the printer, the solvent was spread across each sheet by an absorbent wick, all except black reproduced in pastel shades, pink, mint, sky blue, and so on. Spirit duplicators had the ability to print multiple colors in a single pass
18.
Dot matrix printing
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However, unlike a typewriter or daisy wheel printer, letters are drawn out of a dot matrix, and thus, varied fonts and arbitrary graphics can be produced. Each dot is produced by a metal rod, also called a wire or pin. Facing the ribbon and the paper is a guide plate named ribbon mask holder or protector. It is pierced with holes to serve as guides for the pins and this plate may be made of hard plastic or an artificial jewel such as sapphire or ruby. The portion of the containing the pins is called the print head. When running the printer, it generally prints one line of text at a time, there are two approaches to achieve this, The common serial dot matrix printers use a horizontally moving print head. The print head can be thought of featuring a vertical column of seven or more pins approximately the height of a character box. Thereby, up to 48 pins can be used to form the characters of a line while the print head moves horizontally. In a considerably different configuration, so called line dot matrix printers use a print head almost as wide as the paper path utilizing a horizontal line of thousands of pins for printing. Sometimes two horizontally slightly displaced rows are used to improve the effective dot density through interleaving, while still line-oriented, these printers for the professional heavy-duty market effectively print a whole line at once while the paper moves forward below the print head. The printing speed of serial dot matrix printers with moving heads varies from 30 to 1550 cps, in contrast to this, line matrix printers are capable of printing much more than 1000 cps, resulting in a throughput of up to 800 pages/hour. Because the printing involves mechanical pressure, both of these types of printers can create carbon copies and carbonless copies and these machines can be highly durable. A variation on the dot matrix printer was the cross hammer dot printer, the smooth cylindrical roller of a conventional printer was replaced by a spinning, fluted cylinder. The print head was a hammer, with a vertical projecting edge. Where the vertical edge of the hammer intersected the horizontal flute of the cylinder, compressing the paper, characters were built up of multiple dots. Although nearly all inkjet, thermal, and laser printers also print closely spaced dots rather than lines or characters. In 1925, Rudolf Hell invented the Hellschreiber, an early facsimile-like dot matrix-based teletypewriter device, like the earlier Hellschreiber, it still used electromechanical means of coding and decoding, but it used a start-stop method rather than synchronous transmission for communication. In 1956, while he was employed at Telefonbau und Normalzeit GmbH, the device was introduced to the Deutsche Bundespost, when Preikschat emigrated into the USA in 1957 he sold the rights to utilize the applications in any countries to TuN
19.
Phototypesetting
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The photographic paper or film is then fed into a processor, a machine that pulls the paper or film strip through two or three baths of chemicals, where it emerges ready for paste-up or film make-up. Phototypesetting machines project characters onto film for offset printing, in 1949 the Photon Corporation in Cambridge, Mass. Developed equipment based on the Lumitype of Rene Higonnet and Louis Moyroud, the Lumitype-Photon was first used to set a complete published book in 1953, and for newspaper work in 1954. Mergenthaler produced the Linofilm using a different design, and Monotype produced Monophoto, other companies followed with products that included Alphatype and Varityper. This cold-type technology could also be used in environments where hot-metal machines could not. The use of phototypesetting grew rapidly in the 1960s when software was developed to convert marked up copy, usually typed on paper tape, to the codes that controlled the phototypesetters. To provide much greater speeds, the Photon Corporation produced the ZIP200 machine for the MEDLARS project of the National Library of Medicine, the ZIP200 can produce text at 600 characters per second using high-speed flashes behind plates with images of the characters to be printed. Each character has a separate xenon flash constantly ready to fire, a separate system of optics positions the image on the page. An enormous advance was made by the mid-1960s with the development of equipment that projects the characters from CRT screens, alphanumeric Corporation produced the APS series. Rudolf Hell developed the Digiset machine in Germany, the RCA Graphic Systems Division manufactured this in the U. S. as the Videocomp, later marketed by Information International Inc. Software for operator-controlled hyphenation was a component of electronic typesetting. Early work on this topic produced paper tape to control hot-metal machines, C. J. Duncan, at the University of Durham in England, was a pioneer. Berthold successfully developed its Diatype, Diatronic, and ADS machines, Compugraphic produced phototypesetting machines in the 1970s that made it economically feasible for small publications to set their own type with professional quality. One model, the Compugraphic Compuwriter, uses a filmstrip wrapped around a drum that rotates at several hundred revolutions per minute, the filmstrip contains two fonts in one point size. To get different-sized fonts, the loads a different font strip or uses a 2x magnifying lens built into the machine. The CompuWriter II automated the lens switch and let the operator use multiple settings, other manufacturers of photo compositing machines include Alphatype, Varityper, Mergenthaler, Autologic, Berthold, Dymo, Harris, Monotype, Star/Photon, Graphic Systems Inc. Hell AG, MGD Graphic Systems, and American Type Founders, released in 1975, the Compuwriter IV holds two filmstrips, each holding four fonts. It also has a turret which has eight lenses giving different point sizes from the font, generally 8 or 12 sizes
20.
Inkjet printing
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Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper, plastic, or other substrates. Inkjet printers are the most commonly used type of printer, the concept of inkjet printing originated in the 20th century, and the technology was first extensively developed in the early 1950s. Starting in the late 1970s inkjet printers that could reproduce digital images generated by computers were developed, mainly by Epson, Hewlett-Packard, in the worldwide consumer market, four manufacturers account for the majority of inkjet printer sales, Canon, HP, Epson, and Brother. The emerging ink jet material deposition market also uses inkjet technologies, typically printheads using piezoelectric crystals, the technology has been extended and the ″ink″ can now also comprise living cells, for creating biosensors and for tissue engineering. There are two main technologies in use in contemporary inkjet printers, continuous and Drop-on-demand, the continuous inkjet method is used commercially for marking and coding of products and packages. In 1867 Lord Kelvin patented the syphon recorder, which recorded telegraph signals as a trace on paper using an ink jet nozzle deflected by a magnetic coil. The first commercial devices were introduced in 1951 by Siemens, the ink droplets are subjected to an electrostatic field created by a charging electrode as they form, the field varies according to the degree of drop deflection desired. This results in a controlled, variable electrostatic charge on each droplet, charged droplets are separated by one or more uncharged guard droplets to minimize electrostatic repulsion between neighbouring droplets. The more highly charged droplets are deflected to a greater degree, only a small fraction of the droplets is used to print, the majority being recycled. CIJ is one of the oldest ink jet technologies in use and is fairly mature, viscosity is monitored and a solvent is added to counteract solvent loss. Drop-on-demand is divided into thermal DOD and piezoelectric DOD, most consumer inkjet printers, including those from Canon, Hewlett-Packard, and Lexmark, use the thermal inkjet process. Vaughts work started in late 1978 with a project to develop fast, low-cost printing, the team at HP found that thin-film resistors could produce enough heat to fire an ink droplet. Two years later the HP and Canon teams found out about each others work, in the thermal inkjet process, the print cartridges consist of a series of tiny chambers, each containing a heater, all of which are constructed by photolithography. The inks involved are usually water-based and use either pigments or dyes as the colorant, the inks must have a volatile component to form the vapor bubble, otherwise droplet ejection cannot occur. As no special materials are required, the print head is generally cheaper to produce than in other inkjet technologies, most commercial and industrial inkjet printers and some consumer printers use a piezoelectric material in an ink-filled chamber behind each nozzle instead of a heating element. When a voltage is applied, the material changes shape, generating a pressure pulse in the fluid. A DOD process uses software that directs the heads to apply between zero and eight droplets of ink per dot, only where needed, piezo inkjet technology is often used on production lines to mark products. For instance, the date is often applied to products with this technique, in this application the head is stationary
21.
Dye-sublimation printer
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A dye-sublimation printer is a computer printer which uses heat to transfer dye onto materials such as a plastic, card, paper, or fabric. The sublimation name was first applied because the dye was considered to make the transition between the solid and gas states without going through a liquid stage and this understanding of the process was later shown to be incorrect. There is some liquifying of the dye, since then, the process is sometimes known as dye-diffusion, though this has not eliminated the original name. Many consumer and professional dye-sublimation printers are designed and used for producing photographic prints, ID cards, clothing and these are done at lower temperatures but higher pressures, particularly in all-over print processes. Some dye-sublimation printers use CMYO colors, which differs from the more recognized CMYK colors in that the black is eliminated in favour of a clear overcoating. This overcoating is also stored on the ribbon and is effectively a thin layer protects the print from discoloration from UV light. For ID card printing, text and bar codes are necessary and this overall process is then sometimes called D2T2. Dye-sublimation printing is a printing technology using full color artwork that works with polyester. The process uses the science of sublimation, in heat and pressure are applied to a solid. In sublimation printing, unique sublimation dyes are transferred to sheets of paper via liquid gel ink through a piezoelectric print head. The ink is deposited on these high-release inkjet papers, which are used for the step of the sublimation printing process. After the digital design is printed onto sublimation transfer sheets, it is placed on a heat press along with the substrate to be sublimated. In order to transfer the image from the paper to the substrate, it requires a press process that is a combination of time. The heat press applies this special combination, which can change depending on the substrate, the most common dyes used for sublimation activate at 350 degrees Fahrenheit. However, a range of 380 to 420 degrees Fahrenheit is normally recommended for optimal color, the end result of the sublimation process is a nearly permanent, high resolution, full color print. Because the dyes are infused into the substrate at the level, rather than applied at a topical level. The most common process lays one color at a time, the dye being stored on a ribbon that has each color on a separate panel. Each colored panel is the size of the medium that is being printed on, for example, tiny heating elements on the head change temperature rapidly, laying different amounts of dye depending on the amount of heat applied
22.
Laser printing
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Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics by repeatedly passing a laser beam back, the drum then selectively collects electrically charged powdered ink, and transfers the image to paper, which is then heated in order to permanently fuse the text and/or imagery. As with digital photocopiers, laser printers employ a xerographic printing process, however, laser printing differs from analog photocopiers in that the image is produced by the direct scanning of the medium across the printers photoreceptor. This enables laser printing to copy images more quickly than most photocopiers, invented at Xerox PARC in the 1970s, laser printers were introduced for the office and then home markets in subsequent years by IBM, Canon, Xerox, Apple, Hewlett-Packard and many others. Over the decades, quality and speed have increased as price has fallen, in the 1960s, the Xerox Corporation held a dominant position in the photocopier market. In 1969, Gary Starkweather, who worked in Xeroxs product development department, had the idea of using a beam to draw an image of what was to be copied directly onto the copier drum. After transferring to the recently formed Palo Alto Research Center in 1971, in 1972, Starkweather worked with Butler Lampson and Ronald Rider to add a control system and character generator, resulting in a printer called EARS —which later became the Xerox 9700 laser printer. The first commercial implementation of a printer was the IBM3800 in 1976. It was designed for data centers, where it replaced line printers attached to mainframe computers, the IBM3800 was used for high-volume printing on continuous stationery, and achieved speeds of 215 pages per minute, at a resolution of 240 dots per inch. Over 8,000 of these printers were sold, the Xerox 9700 was brought to market in 1977. Unlike the IBM3800, the Xerox 9700 was not targeted to any particular existing printers. The Xerox 9700 excelled at printing high-value documents on paper with varying content. In 1979, inspired by the Xerox 9700s commercial success, Japanese camera and optics company, Canon, developed a low-cost, desktop laser printer, Canon then began work on a much-improved print engine, the Canon CX, resulting in the LBP-CX printer. Lacking experience in selling to computer users, Canon sought partnerships with three Silicon Valley companies, Diablo Data Systems, Hewlett-Packard, and Apple Computer, the first laser printer designed for office use reached market in 1981, the Xerox Star 8010. The system used a metaphor that was unsurpassed in commercial sales. Although it was innovative, the Star workstation was an expensive system, affordable only to a fraction of the businesses. The first laser printer intended for mass-market sales was the HP LaserJet, released in 1984, it used the Canon CX engine, the LaserJet was quickly followed by printers from Brother Industries, IBM, and others. First-generation machines had large photosensitive drums, of greater than the loaded papers length
23.
Thermal printing
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The coating turns black in the areas where it is heated, producing an image. Two-colour direct thermal printers can print both black and an additional colour by applying heat at two different temperatures, thermal transfer printing is a very different method that uses a heat-sensitive ribbon instead of heat-sensitive paper, but uses similar thermal print heads. The printer sends a current to the heating elements of the thermal head. The heat activates the thermo-sensitive coloring layer of the thermosensitive paper, such a printing mechanism is known as a thermal system or direct system. The heating elements are arranged as a matrix of small closely spaced dots—thermal printers are actually dot-matrix printers. The paper is impregnated with a mixture of a dye and a suitable matrix, a combination of a fluoran leuco dye. Controller boards are embedded with firmware to manage the thermal printer mechanisms, the firmware can manage multiple bar code types, graphics and logos. They enable the user to choose between different resident fonts and character sizes. Controller boards can drive various sensors such as low, paper out, door open and so on. For point of sale application some boards can also control the cash drawer, thermal printers print more quietly and usually faster than impact dot matrix printers. They are also smaller, lighter and consume less power, making them ideal for portable and its efficiency can be utilized in retail sectors. Roll-based printers can be rapidly refilled and they often used unusually-sized supplies and were often used for making permanent records of information in the computer, rather than for correspondence. Through the 1990s many fax machines used thermal printing technology, thermal Receipt Printers are very efficient and quick. Its efficiency can be utilized in retail sectors, thermal printers are still commonly used in seafloor exploration and engineering geology due to their portability, speed, and ability to create continuous reels or sheets. Typically, thermal printers found in applications are used to print realtime records of side scan sonar. In data processing, thermal printers are used to quickly create hard copies of continuous seismic or hydrographic records stored in digital SEG Y or XTF form. The Game Boy Printer, released in 1998, was a thermal printer used to print out certain elements from some Game Boy games. Early formulations of the coating used in thermal paper were sensitive to incidental heat, abrasion, friction, light
24.
3D printing
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Objects can be of almost any shape or geometry and are produced using digital model data from a 3D model or another electronic data source such as an Additive Manufacturing File file. The term 3D printing originally referred to a process that deposits a binder material onto a bed with inkjet printer heads layer by layer. More recently, the term is being used in popular vernacular to encompass a variety of additive manufacturing techniques. United States and global technical standards use the term additive manufacturing for this broader sense. Early additive manufacturing equipment and materials were developed in the 1980s, but on July 16,1984 Alain Le Méhauté, Olivier de Witte and Jean Claude André filed their patent for the stereolithography process. It was three weeks before Chuck Hull filed his own patent for stereolithography, the application of French inventors were abandoned by the French General Electric Company and CILAS. The claimed reason was for lack of business perspective, Hull defined the process as a system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed, but this had been already invented by Kodama. Hulls contribution is the design of the STL file format widely accepted by 3D printing software as well as the digital slicing, the term 3D printing originally referred to a process employing standard and custom inkjet print heads. The technology used by most 3D printers to date—especially hobbyist and consumer-oriented models—is fused deposition modeling, AM processes for metal sintering or melting usually went by their own individual names in the 1980s and 1990s. But AM-type sintering was beginning to challenge that assumption, by the mid 1990s, new techniques for material deposition were developed at Stanford and Carnegie Mellon University, including microcasting and sprayed materials. Sacrificial and support materials had become more common, enabling new object geometries. The umbrella term additive manufacturing gained wider currency in the decade of the 2000s, as the various additive processes matured, it became clear that soon metal removal would no longer be the only metalworking process done under that type of control. It was during this decade that the term subtractive manufacturing appeared as a retronym for the family of machining processes with metal removal as their common theme. The term subtractive has not replaced the term machining, instead complementing it when a term that covers any removal method is needed, both terms reflect the simple fact that the technologies all share the common theme of sequential-layer material addition/joining throughout a 3D work envelope under automated control. The 2010s were the first decade in which metal end use parts such as engine brackets, agile tooling uses a cost effective and high quality method to quickly respond to customer and market needs. It can be used in hydro-forming, stamping, injection molding, as technology matured, several authors had begun to speculate that 3D printing could aid in sustainable development in the developing world. 3D printable models may be created with a computer-aided design package, via a 3D scanner, or by a digital camera. 3D printed models created with CAD result in reduced errors and can be corrected before printing, allowing verification in the design of the object before it is printed, the manual modeling process of preparing geometric data for 3D computer graphics is similar to plastic arts such as sculpting
25.
Digital printing
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Digital printing refers to methods of printing from a digital-based image directly to a variety of media. It usually refers to professional printing where small-run jobs from desktop publishing and it also allows for on-demand printing, short turnaround time, and even a modification of the image used for each impression. This results in quicker turnaround time and lower cost when using digital printing, fine art digital inkjet printing is printing from a computer image file directly to an inkjet printer as a final output. Initially, these printers were limited to glossy papers, but the IRIS Graphics printer allowed the use of a variety of papers that included traditional and non-traditional media. Substrates in fine art inkjet printmaking include traditional fine-art papers such as Rives BFK, Arches watercolor paper, treated and untreated canvas, experimental substrates, inkjet reproductions can be printed and sold individually in accordance with demand. Digital inkjet printing also allows for the output of art of all types as finished pieces or as an element in a further art piece. Experimental artists often add texture or other media to the surface of a final print, many terms for the process have been used over the years, including digigraph and giclée. Thousands of print shops and digital printmakers now offer services to painters, photographers, digital images are exposed onto true, light sensitive photographic paper with lasers and processed in photographic developers and fixers. These prints are true photographs and have continuous tone in the image detail, the archival quality of the print is as high as the manufacturers rating for any given photo paper used. In large format prints, the greatest advantage is that, since no lens is used, digital printing technology has grown significantly over the past few years with substantial developments in quality and sheet sizes. Digital printing has many advantages over traditional methods, print on Demand – digital printing is used for personalized printing for example, childrens books customized with a childs name, photo books, or any other books. Advertising – often used for banner advertising and event signage, in trade shows, in the retail sector at point of sale or point of purchase. Photos – digital printing has revolutionized photo printing in terms of the ability to retouch, architectural Design – new media that conforms to a variety of surfaces has enabled interior and exterior spaces to be transformed using digitally printed wall murals and floor graphics
26.
Technology
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Technology is the collection of techniques, skills, methods and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, the human species use of technology began with the conversion of natural resources into simple tools. The steady progress of technology has brought weapons of ever-increasing destructive power. It has helped develop more advanced economies and has allowed the rise of a leisure class, many technological processes produce unwanted by-products known as pollution and deplete natural resources to the detriment of Earths environment. Various implementations of technology influence the values of a society and raise new questions of the ethics of technology, examples include the rise of the notion of efficiency in terms of human productivity, and the challenges of bioethics. Philosophical debates have arisen over the use of technology, with disagreements over whether technology improves the condition or worsens it. The use of the technology has changed significantly over the last 200 years. Before the 20th century, the term was uncommon in English, the term was often connected to technical education, as in the Massachusetts Institute of Technology. The term technology rose to prominence in the 20th century in connection with the Second Industrial Revolution, the terms meanings changed in the early 20th century when American social scientists, beginning with Thorstein Veblen, translated ideas from the German concept of Technik into technology. In German and other European languages, a distinction exists between technik and technologie that is absent in English, which translates both terms as technology. By the 1930s, technology referred not only to the study of the industrial arts, dictionaries and scholars have offered a variety of definitions. Ursula Franklin, in her 1989 Real World of Technology lecture, gave another definition of the concept, it is practice, the way we do things around here. The term is used to imply a specific field of technology, or to refer to high technology or just consumer electronics. Bernard Stiegler, in Technics and Time,1, defines technology in two ways, as the pursuit of life by other than life, and as organized inorganic matter. Technology can be most broadly defined as the entities, both material and immaterial, created by the application of mental and physical effort in order to some value. In this usage, technology refers to tools and machines that may be used to solve real-world problems and it is a far-reaching term that may include simple tools, such as a crowbar or wooden spoon, or more complex machines, such as a space station or particle accelerator. Tools and machines need not be material, virtual technology, such as software and business methods. W. Brian Arthur defines technology in a broad way as a means to fulfill a human purpose
27.
Printing
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Printing is a process for reproducing text and images using a master form or template. The earliest examples include Cylinder seals and other such as the Cyrus Cylinder. The earliest known form of printing came from China dating to before 220 A. D. Later developments in printing include the type, first developed by Bi Sheng in China around 1040 AD. Johannes Gutenberg introduced mechanical movable type printing to Europe in the 15th century, modern large-scale printing is typically done using a printing press, while small-scale printing is done free-form with a digital printer. Though paper is the most common material, it is frequently done on metals, plastics, cloth. On paper it is carried out as a large-scale industrial process and is an essential part of publishing. Woodblock printing is a technique for printing text, images or patterns that was used widely throughout East Asia and it originated in China in antiquity as a method of printing on textiles and later on paper. As a method of printing on cloth, the earliest surviving examples from China date to before 220 A. D, the earliest surviving woodblock printed fragments are from China. They are of silk printed with flowers in three colours from the Han Dynasty and they are the earliest example of woodblock printing on paper appeared in the mid-seventh century in China. By the ninth century, printing on paper had taken off, by the tenth century,400,000 copies of some sutras and pictures were printed, and the Confucian classics were in print. A skilled printer could print up to 2,000 double-page sheets per day, Printing spread early to Korea and Japan, which also used Chinese logograms, but the technique was also used in Turpan and Vietnam using a number of other scripts. This technique then spread to Persia and Russia and this technique was transmitted to Europe via the Islamic world, and by around 1400 was being used on paper for old master prints and playing cards. However, Arabs never used this to print the Quran because of the limits imposed by Islamic doctrine, block printing, called tarsh in Arabic developed in Arabic Egypt during the ninth-tenth centuries, mostly for prayers and amulets. There is some evidence to suggest that these print blocks made from non-wood materials, possibly tin, lead, the techniques employed are uncertain, however, and they appear to have had very little influence outside of the Muslim world. Though Europe adopted woodblock printing from the Muslim world, initially for fabric, block printing later went out of use in Islamic Central Asia after movable type printing was introduced from China. Block printing first came to Europe as a method for printing on cloth, images printed on cloth for religious purposes could be quite large and elaborate. When paper became relatively easily available, around 1400, the medium transferred very quickly to small religious images
28.
Typography
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Typography is the art and technique of arranging type to make written language legible, readable, and appealing when displayed. The arrangement of type involves selecting typefaces, point sizes, line lengths, line-spacing, and letter-spacing, the term typography is also applied to the style, arrangement, and appearance of the letters, numbers, and symbols created by the process. Type design is a closely related craft, sometimes considered part of typography, most typographers do not design typefaces, Typography also may be used as a decorative device, unrelated to communication of information. Until the Digital Age, typography was a specialized occupation, as the capability to create typography has become ubiquitous, the application of principles and best practices developed over generations of skilled workers and professionals has diminished. Babylonian cylinder seals were used to create an impression on a surface by rolling the seal on wet clay, Typography also was implemented in the Phaistos Disc, an enigmatic Minoan printed item from Crete, which dates to between 1850 and 1600 B. C. It has been proposed that Roman lead pipe inscriptions were created with movable type printing, the essential criterion of type identity was met by medieval print artifacts such as the Latin Pruefening Abbey inscription of 1119 that was created by the same technique as the Phaistos Disc. The silver altarpiece of patriarch Pellegrinus II in the cathedral of Cividale was printed with individual letter punches, apparently, the same printing technique may be found in tenth to twelfth century Byzantine reliquaries. Other early examples include individual letter tiles where the words are formed by assembling single letter tiles in the desired order, Typography with movable type was invented during the eleventh-century Song dynasty in China by Bi Sheng. His movable type system was manufactured from ceramic materials, and clay type printing continued to be practiced in China until the Qing Dynasty, wang Zhen was one of the pioneers of wooden movable type. Although the wooden type was more durable under the mechanical rigors of handling, repeated printing wore the character faces down, metal movable type was first invented in Korea during the Goryeo Dynasty, approximately 1230. Hua Sui introduced bronze type printing to China in 1490 AD, the diffusion of both movable-type systems was limited and the technology did not spread beyond East and Central Asia, however. Modern lead-based movable type, along with the printing press, is most often attributed to the goldsmith Johannes Gutenberg in 1439. His type pieces, made from an alloy, suited printing purposes so well that the alloy is still used today. Gutenberg developed specialized techniques for casting and combining cheap copies of letter punches in the vast quantities required to print multiple copies of texts and this technical breakthrough was instrumental in starting the Printing Revolution and the first book printed with lead-based movable type was the Gutenberg Bible. Rapidly advancing technology revolutionized typography in the twentieth century. During the 1960s some camera-ready typesetting could be produced in any office or workshop with stand-alone machines such as introduced by IBM. During the mid-1980s personal computers such as the Macintosh allowed type designers to create typefaces digitally using commercial graphic design software, Digital technology also enabled designers to create more experimental typefaces as well as the practical typefaces of traditional typography. Designs for typefaces could be created faster with the new technology, the cost for developing typefaces was drastically lowered, becoming widely available to the masses
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Sort (typesetting)
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When the form was no longer needed all of the type had to be sorted back into the correct slots in the type case in a very time-consuming process called distributing. This sorting process led to the pieces being called sorts. It is often claimed to be the root of such as out of sorts and wrong sort. During the hot metal typesetting era, printing equipment used matrices to cast type as needed during the typesetting process, the popular Linotype cast entire lines of text at once rather than individual sorts, while the less popular competitor Monotype still cast the sorts individually. Later, when phototypesetting replaced hot metal typesetting, sorts disappeared entirely from the printing process. History of western typography Matrix Typeface Typography Typeface anatomy Nesbitt, Alexander The History and Technique of Lettering 1957, Dover Publications, ISBN 0-486-20427-8, Library of Congress Catalogue Card Number, 57-13116. Typowiki, a wiki at typophile. com Metal Type - For Those who Remember Hot Metal Typesetting
30.
Paper
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Paper is a thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. It is a material with many uses, including writing, printing, packaging, cleaning. The modern pulp and paper industry is global, with China leading its production, the oldest known archaeological fragments of the immediate precursor to modern paper, date to the 2nd century BC in China. The pulp papermaking process is ascribed to Cai Lun, a 2nd-century AD Han court eunuch, with paper as an effective substitute for silk in many applications, China could export silk in greater quantity, contributing to a Golden Age. Because of papers introduction to the West through the city of Baghdad, in the 19th century, industrial manufacture greatly lowered its cost, enabling mass exchange of information and contributing to significant cultural shifts. In 1844, the Canadian inventor Charles Fenerty and the German F. G. Keller independently developed processes for pulping wood fibres, before the industrialisation of the paper production the most common fibre source was recycled fibres from used textiles, called rags. The rags were from hemp, linen and cotton, a process for removing printing inks from recycled paper was invented by German jurist Justus Claproth in 1774. Today this method is called deinking and it was not until the introduction of wood pulp in 1843 that paper production was not dependent on recycled materials from ragpickers. The word paper is etymologically derived from Latin papyrus, which comes from the Greek πάπυρος, although the word paper is etymologically derived from papyrus, the two are produced very differently and the development of the first is distinct from the development of the second. Papyrus is a lamination of natural plant fibres, while paper is manufactured from fibres whose properties have changed by maceration. To make pulp from wood, a chemical pulping process separates lignin from cellulose fibres and this is accomplished by dissolving lignin in a cooking liquor, so that it may be washed from the cellulose, this preserves the length of the cellulose fibres. Paper made from chemical pulps are also known as wood-free papers–not to be confused with paper, this is because they do not contain lignin. The pulp can also be bleached to produce paper, but this consumes 5% of the fibres, chemical pulping processes are not used to make paper made from cotton. There are three main chemical pulping processes, the process dates back to the 1840s and it was the dominant method extent before the second world war. Most pulping operations using the process are net contributors to the electricity grid or use the electricity to run an adjacent paper mill. Another advantage is that this process recovers and reuses all inorganic chemical reagents, soda pulping is another specialty process used to pulp straws, bagasse and hardwoods with high silicate content. There are two major mechanical pulps, thermomechanical pulp and groundwood pulp, in the TMP process, wood is chipped and then fed into steam heated refiners, where the chips are squeezed and converted to fibres between two steel discs. In the groundwood process, debarked logs are fed into grinders where they are pressed against rotating stones to be made into fibres
31.
Books
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A book is a set of written, printed, illustrated, or blank sheets, made of paper, parchment, or other materials, fastened together to hinge at one side, with text and/or images printed in ink. A single sheet within a book is a leaf, and each side of a leaf is a page, a set of text-filled or illustrated pages produced in electronic format for reading on a computer screen, smartphone or e-reader device is known as an electronic book, or e-book. The term books may refer the body of works of literature. In library and information science, a book is called a monograph, to distinguish it from serial periodicals such as magazines, journals, in novels and sometimes other types of books, a book may be divided into several large sections, also called books. An avid reader or collector of books or a lover is a bibliophile or colloquially. A shop where books are bought and sold is a bookshop or bookstore, Books are also sold in some department stores, drugstores and newspaper vendors. Books can also be borrowed from libraries, google has estimated that as of 2010, approximately 130,000,000 distinct titles had been published. In some wealthier nations, printed books are giving way to the usage of electronic or e-books, the word book comes from Old English bōc, which in turn comes from the Germanic root *bōk-, cognate to beech. Similarly, in Slavic languages буква is cognate with beech, in Russian and in Serbian and Macedonian, the word букварь or буквар refers specifically to a primary school textbook that helps young children master the techniques of reading and writing. It is thus conjectured that the earliest Indo-European writings may have been carved on beech wood, similarly, the Latin word codex, meaning a book in the modern sense, originally meant block of wood. When writing systems were created in ancient civilizations, a variety of objects, such as stone, clay, tree bark, metal sheets, the study of such inscriptions forms a major part of history. The study of inscriptions is known as epigraphy, the Ancient Egyptians would often write on papyrus, a plant grown along the Nile River. At first the words were not separated from other and there was no punctuation. Texts were written right to left, left to right. The technical term for that last type of writing is boustrophedon, a tablet might be defined as a physically robust writing medium, suitable for casual transport and writing. See also stylus, the instrument used to write on a tablet, clay tablets were flattened and mostly dry pieces of clay that could be easily carried, and impressed with a stylus. They were used as a medium, especially for writing in cuneiform, throughout the Bronze Age. Tablets were used by traders to record sales of such as bushels of grain
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Porcelain
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Porcelain /ˈpɔːrsəlᵻn, ˈpɔːrslᵻn/ is a ceramic material made by heating materials, generally including kaolin, in a kiln to temperatures between 1,200 and 1,400 °C. Porcelain was first developed in China around 2,000 years ago, then spread to other East Asian countries, and finally Europe. It combines well with both glazes and paint, and can be modelled very well, allowing a range of decorative treatments in tablewares, vessels. It also has uses in technology and industry. The European name, porcelain in English, come from the old Italian porcellana because of its resemblance to the translucent surface of the shell, Porcelain is also referred to as china or fine china in some English-speaking countries, as it was first seen in imports from China. Porcelain has been described as being completely vitrified, hard, impermeable, white or artificially coloured, translucent, however, the term porcelain lacks a universal definition and has been applied in a very unsystematic fashion to substances of diverse kinds which have only certain surface-qualities in common. Terms such as porcellaneous or near-porcelain may be used in such cases, a high proportion of modern porcelain is made of the variant bone china. Kaolin is the material from which porcelain is made, even though clay minerals might account for only a small proportion of the whole. The word paste is an old term for both the unfired and fired material, a more common terminology these days for the unfired material is body, for example, when buying materials a potter might order an amount of porcelain body from a vendor. The composition of porcelain is highly variable, but the mineral kaolinite is often a raw material. Other raw materials can include feldspar, ball clay, glass, bone ash, steatite, quartz, petuntse, the clays used are often described as being long or short, depending on their plasticity. Long clays are cohesive and have high plasticity, short clays are cohesive and have lower plasticity. Clays used for porcelain are generally of lower plasticity and are shorter than many other pottery clays and they wet very quickly, meaning that small changes in the content of water can produce large changes in workability. Thus, the range of content within which these clays can be worked is very narrow. The following section provides information on the methods used to form, decorate, finish, glaze. Many types of glaze, such as the iron-containing glaze used on the wares of Longquan, were designed specifically for their striking effects on porcelain. Porcelain wares may be decorated under the glaze using pigments that include cobalt and copper or over the glaze using coloured enamels. Like many earlier wares, modern porcelains are often biscuit-fired at around 1,000 °C, coated with glaze, another early method is once-fired where the glaze is applied to the unfired body and the two fired together in a single operation
33.
Northern Song Dynasty
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The Song dynasty was an era of Chinese history that began in 960 and continued until 1279. It succeeded the Five Dynasties and Ten Kingdoms period, coincided with the Liao and Western Xia dynasties and it was the first government in world history to issue banknotes or true paper money nationally and the first Chinese government to establish a permanent standing navy. This dynasty also saw the first known use of gunpowder, as well as the first discernment of true north using a compass, the Song dynasty is divided into two distinct periods, Northern and Southern. During the Northern Song, the Song capital was in the city of Bianjing. The Southern Song refers to the period after the Song lost control of its half to the Jurchen Jin dynasty in the Jin–Song Wars. During this time, the Song court retreated south of the Yangtze, the Southern Song dynasty considerably bolstered its naval strength to defend its waters and land borders and to conduct maritime missions abroad. To repel the Jin, and later the Mongols, the Song developed revolutionary new military technology augmented by the use of gunpowder, in 1234, the Jin dynasty was conquered by the Mongols, who took control of northern China, maintaining uneasy relations with the Southern Song. Möngke Khan, the fourth Great Khan of the Mongol Empire and his younger brother Kublai Khan was proclaimed the new Great Khan, though his claim was only partially recognized by the Mongols in the west. In 1271, Kublai Khan was proclaimed the Emperor of China, after two decades of sporadic warfare, Kublai Khans armies conquered the Song dynasty in 1279. The Mongol invasion led to a reunification under the Yuan dynasty, the population of China doubled in size during the 10th and 11th centuries. The Northern Song census recorded a population of roughly 50 million, much like the Han and this data is found in the Standard Histories. However, it is estimated that the Northern Song had a population of some 100 million people and this dramatic increase of population fomented an economic revolution in pre-modern China. The expansion of the population, growth of cities, and the emergence of a national economy led to the withdrawal of the central government from direct involvement in economic affairs. The lower gentry assumed a role in grassroots administration and local affairs. Appointed officials in county and provincial centers relied upon the gentry for their services, sponsorship. Social life during the Song was vibrant, citizens gathered to view and trade precious artworks, the populace intermingled at public festivals and private clubs, and cities had lively entertainment quarters. The spread of literature and knowledge was enhanced by the expansion of woodblock printing. Technology, science, philosophy, mathematics, and engineering flourished over the course of the Song, although the institution of the civil service examinations had existed since the Sui dynasty, it became much more prominent in the Song period
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Jikji
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Jikji is the abbreviated title of a Korean Buddhist document, whose title can be translated Anthology of Great Buddhist Priests Zen Teachings. Printed during the Goryeo Dynasty in 1377, it is the worlds oldest extant book printed with movable metal type, UNESCO confirmed Jikji as the worlds oldest metalloid type in September 2001 and includes it in the Memory of the World Programme. Jikji was published in Heungdeok Temple in 1377,78 years prior to Johannes Gutenbergs acclaimed 42-Line Bible printed during the years 1452–1455. The greater part of the Jikji is now lost, and today only the last volume survives, and is kept at the Manuscrits Orientaux division of the National Library of France. The Jikji was written by the Buddhist monk Baegun, who served as the chief priest of Anguk and Shingwang temples in Haeju, Baegun died in Chwiam Temple in Yeoju in 1374. The Jikji comprises a collection of excerpts from the analects of the most revered Buddhist monks throughout successive generations, gyeonghan compiled it as a guide for students of Buddhism, then Koreas national religion under the Goryeo Dynasty. The text propounds on the essentials of Seon, the predecessor to Japans Zen Buddhism, the Jikji consists of two volumes. The metal-print Jikji that was published in Heungdeok Temple is kept in the Manuscrits Orientaux division of the National Library of France, a wood-carving print of Jikji published in Chwiamsa Temple contains the complete two volumes. This is kept in the National Library of Korea and Jangsagak, on the last page of Jikji is recorded details of its publication, indicating that it was published in the 3rd Year of King U by metal type at Heungdeok temple in Cheongju. The Jikji originally consisted of two volumes totaling 307 chapters, but the first volume of the printed version is no longer extant. The surviving metal types dimensions are 24.6 x 17.0 cm and its paper is very slight and white. The whole text is doubly folded very slightly, the title of Jikji also seems to be written with an Indian ink after the original. The cover on the volume of the metal type edition records in French The oldest known Korean book printed with molded type, with 1377 as date. The lines are not straight, but askew, the difference of the thickness of ink color shown on drawn letter paper is large, and spots often occur. Even some characters, such as day or one, are written reversely, the same typed letters are not shown on the same paper, but the same typed letters appear on other leaves. There are also blurs and spots around the characters. Toward the end of the Joseon Dynasty, a French diplomat bought in Seoul the second volume of the Jikji and took it to France, which has since preserved it at the National Library of France in Paris. ”Today only 38 sheets of the second volume of the metal print edition are extant. Plancy, who had majored in law in France and went on to study Chinese, had for six years served as translator at the French Legation in China between 1877 and 1883, in 1888 he came to Seoul as the first French consul to Korea, staying until 1891
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Goryeo
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Goryeo, also spelled as Koryŏ, was a Korean dynasty established in 918 by King Taejo. This kingdom later gave name to the modern exonym Korea and it united the Later Three Kingdoms in 936 and ruled most of the Korean Peninsula until it was removed by the founder of the Joseon in 1392. Goryeo expanded Koreas borders to present-day Wonsan in the northeast, the Yalu River, two of this periods most notable products are celadon pottery and the Tripitaka Koreana—the Buddhist canon carved onto more than 80,000 woodblocks and stored at Haeinsa. The people of Goryeo also created the first metal type that was capable of printing actual books, in 1234, the oldest surviving metal movable type book. A son of a lord, Wang Geon, joined Taebong as a general. Taebong fell when Wang Geon revolted and killed Gung Ye in 918, Silla was overpowered by Goryeo and Later Baekje and surrendered to Goryeo in 935. By the late 13th century, after nearly 30 years of warfare with the Mongols of the Yuan dynasty, Goryeo lost much of its power, the name Goryeo is derived from Goguryeo of the Three Kingdoms of Korea, which the Goryeo state regarded as its predecessor. Goguryeo changed its name to Goryeo during the reign of Jangsu in the 5th century, the English name Korea derives from Goryeo. Silla, which had accomplished an incomplete unification of the Three Kingdoms of Korea in 668, weakened, the country entered a period of civil war and rebellion, led by Gung Ye, Gi Hwon, Yang Gil, and Gyeon Hwon. Gung Ye established the state of Later Goguryeo, renamed Taebong, together with the declining Later Silla, they are known as the Later Three Kingdoms. Wang Geon, who became the Taejo of Goryeo, joined Later Goguryeo as a general but later overthrew Gung Ye. Goryeo regarded itself as the successor of Goguryeo, Wang Geon, the founder of Goryeo, was a descendant of Goguryeo, and traced his ancestry to a noble Goguryeo clan. For three years after, Later Baekje dominated the Later Three Kingdoms, but after a defeat at Andong in 930, the Later Three Kingdoms era ended when Goryeo annexed Silla in 935 and defeated Later Baekje in 936. King Taejo moved the capital to his hometown of Kaesǒng, Taejo married a daughter of the Silla royal family and allowed most of their nobility to keep their lands. Even though he ruled the nation for only seven years before his son took the throne upon his death. The terminology used in the court of Goryeo was that of an empire, the capital, Gaegyeong was called Hwangdo Imperial Capital and the palace was referred to as Imperial Palace. The nation also utilized a system of multiple capitals, Gaegyeong as the main capital, the mere use of this system and the nomenclature or use of the character 京 implied that Goryeo functioned internally as an empire. Other terms, such as Your Imperial Majesty, Empress Imperial Crown Prince, Empress Dowager, however, Goryeo, when enshrining its rulers, did not use the title Emperor
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East Asia
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East Asia is the eastern subregion of the Asian continent, which can be defined in either geographical or ethno-cultural terms. Geographically and geopolitically, it includes China, Taiwan, Mongolia, Korea and Japan, it covers about 12,000,000 km2, or about 28% of the Asian continent, the East Asian people comprise more than 1.5 billion people. About 38% of the population of Asia and 22%, or over one fifth, the overall population density of the region is 133 inhabitants per square kilometre, about three times the world average of 45/km2. Historically, societies in East Asia have been part of the Chinese cultural sphere, major religions include Buddhism, Confucianism or Neo-Confucianism, Taoism, Chinese folk religion in China and Taiwan, Shinto in Japan, Korean shamanism in Korea. Shamanism is also prevalent among Mongolians and other populations of northern East Asia. The Chinese calendar is the root from which many other East Asian calendars are derived, Chinese Dynasties dominated the region in matters of culture, trade, and exploration as well as militarily for a very long time. There are records of tributes sent overseas from the kingdoms of Korea. There were also considerable levels of cultural and religious exchange between the Chinese and other regional Dynasties and Kingdoms, as connections began to strengthen with the Western world, Chinas power began to diminish. Around the same time, Japan solidified itself as a nation state, throughout World War II, Korea, Taiwan, much of eastern China, Hong Kong, and Vietnam all fell under Japanese control. Culturally, China, Japan, Korea, Taiwan and Vietnam are commonly seen as being encompassed by cultural East Asia, there are mixed debates around the world whether these countries or regions should be considered in East Asia or not. Vietnam Siberia in Russia Sovereignty issues exist over some territories in the South China Sea, however, in this context, the term Far East is often more appropriate which covers ASEAN countries and the countries in East Asia. However, being a Eurocentric term, Far East describes the geographical position in relation to Europe rather than its location within Asia. Alternatively, the term Asia Pacific Region is often used in describing East Asia and this usage, which is seen in economic and diplomatic discussions, is at odds with the historical meanings of both East Asia and Northeast Asia. The Council on Foreign Relations defines Northeast Asia as Japan and Korea, the military and economic superpower of China became the largest economy in the world in 2014, surpassing the United States of America. Currently in East Asia, trading systems are open, and zero or low duties on imports of consumer and capital goods etc. have considerably helped stimulate cost-efficiency. Free and flexible labor and other markets are important factors making for high levels of business-economic performance. East Asian populations have demonstrated highly positive work ethics, there are relatively large and fast-growing markets for consumer goods and services of all kinds. The culture of East Asia has been influenced by the civilisation of China, East Asia, as well as Vietnam, share a Confucian ethical philosophy, Buddhism, political and legal structures, and historically a common writing system
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Vatican Library
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The Vatican Apostolic Library, more commonly called the Vatican Library or simply the Vat, is the library of the Holy See, located in Vatican City. Formally established in 1475, although it is older, it is one of the oldest libraries in the world. It has 75,000 codices from throughout history, as well as 1.1 million printed books, the Vatican Library is a research library for history, law, philosophy, science and theology. The Vatican Library is open to anyone who can document their qualifications, photocopies for private study of pages from books published between 1801 and 1990 can be requested in person or by mail. In March 2014, the Vatican Library began an initial project of digitising its collection of manuscripts. The Vatican Secret Archives were separated from the library at the beginning of the 17th century, scholars have traditionally divided the history of the library into five periods, Pre-Lateran, Lateran, Avignon, Pre-Vatican and Vatican. The Pre-Lateran period, comprising the initial days of the library, only a handful of volumes survive from this period, though some are very significant. However, in year, the Lateran Palace was burnt. The Avignon period was during the Avignon Papacy, when seven successive popes resided in Avignon and this period saw a great growth in book collection and record keeping by the popes in Avignon, between the death of Boniface and the 1370s when the Papacy returned to Rome. The Pre-Vatican period ranged from about 1370 to 1446, the library was scattered during this time, with parts in Rome, Avignon and elsewhere. In 1451, bibliophile Pope Nicholas V sought to establish a library at the Vatican. Pope Nicholas also expanded his collection by employing Italian and Byzantine scholars to translate the Greek classics into Latin for his library, the knowledgeable Pope already encouraged the inclusion of pagan classics. Nicolas was important in saving many of the Greek works and writings during this period that he had collected while traveling. In 1455, the collection had grown to 1200 books, of which 400 were in Greek language. Nicholas death in 1455 prevented the completion of his vision of a library, but it was finished in 1475 by his successor Pope Sixtus IV. During the papacy of Sixtus IV, acquisitions were made in theology, philosophy, the number of manuscripts is variously counted as 3,500 in 1475 or 2,527 in 1481, when librarian Bartolomeo Platina produced a signed listing. At the time it was the largest collection of books in the Western world, during his reign, Pope Julius II commissioned the expansion of the building. Around 1587, Pope Sixtus V commissioned the architect Domenico Fontana to construct a new building for the library and it was after this the library became known as the Vatican Library
38.
Bodleian Library
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The Bodleian Library, the main research library of the University of Oxford, is one of the oldest libraries in Europe. With over 12 million items, it is the second largest library in Britain after the British Library, known to Oxford scholars as Bodley or the Bod, it operates principally as a reference library and, in general, documents may not be removed from the reading rooms. They do, however, participate in OLIS, the Bodleian Libraries online union catalogue, much of the librarys archives were digitized and put online for public access in 2015. Since the 19th century a number of stores have been built. Before being granted access to the library, new readers are required to agree to a formal declaration and this declaration was traditionally an oral oath, but is now usually made by signing a letter to a similar effect. Ceremonies in which readers recite the declaration are still performed for those who wish to take them, external readers are still required to recite the declaration orally prior to admission. The Bodleian Admissions Office has amassed a collection of translations of the declaration allowing those who are not native English speakers to recite it in their first language. Whilst the Bodleian Library, in its current incarnation, has a history dating back to 1602. The first purpose-built library known to have existed in Oxford was founded in the century under the will of Thomas Cobham. This small collection of chained books was situated above the side of the University Church of St Mary the Virgin on the High Street. A suitable room was built above the Divinity School. This room continues to be known as Duke Humfreys Library, after 1488, the university stopped spending money on the librarys upkeep and acquisitions, and manuscripts began to go unreturned to the library. The late sixteenth century saw the library go through a period of decline, the furniture was sold. During the reign of Edward VI, there was a purge of superstitious manuscripts, six of the Oxford University dons were tasked with helping Bodley in refitting the library in March 1658. Duke Humfrey’s Library was refitted, and Bodley donated a number of his own books to furnish it, the library was formally re-opened on 8 November 1602 under the name “Bodleian Library”. There were around two thousand books in the library at this time, with an ornate Benefactors Register displayed prominently, in 1605, Francis Bacon gave the library a copy of The Advancement of Learning and described the Bodleian as an Ark to save learning from deluge. At this time, there were few books written in English held in the library, Thomas James suggested that Bodley should ask the Stationers Company to provide a copy of all books printed to the Bodleian. In 1610, Bodley made an agreement with the Stationers Company in London to put a copy of every book registered with them in the library, the Bodleian collection grew so fast that the building was expanded between 1610–1612, and again in 1634–1637
39.
Johannes Gutenberg
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Johannes Gensfleisch zur Laden zum Gutenberg was a German blacksmith, goldsmith, printer, and publisher who introduced printing to Europe. Gutenberg in 1439 was the first European to use the printing press and his truly epochal invention was the combination of these elements into a practical system that allowed the mass production of printed books and was economically viable for printers and readers alike. Gutenbergs method for making type is considered to have included a type metal alloy. The alloy was a mixture of lead, tin, and antimony that melted at a low temperature for faster and more economical casting, cast well. In Renaissance Europe, the arrival of mechanical movable type printing introduced the era of communication which permanently altered the structure of society. Gutenbergs printing technology spread rapidly throughout Europe and later the world and his major work, the Gutenberg Bible, has been acclaimed for its high aesthetic and technical quality. Gutenberg was born in the German city of Mainz, the youngest son of the upper-class merchant Friele Gensfleisch zur Laden, and his wife, Else Wyrich. It is assumed that he was baptized in the close to his birthplace of St. Christoph. According to some accounts, Friele was a goldsmith for the bishop at Mainz, Gutenbergs year of birth is not precisely known but was most likely around 1398. John Lienhard, technology historian, says Most of Gutenbergs early life is a mystery and his father worked with the ecclesiastic mint. Gutenberg grew up knowing the trade of goldsmithing and this is supported by historian Heinrich Wallau, who adds, In the 14th and 15th centuries his claimed a hereditary position as. Retainers of the household of the master of the archiepiscopal mint, in this capacity they doubtless acquired considerable knowledge and technical skill in metal working. They supplied the mint with the metal to be coined, changed the species of coins. Wallau adds, His surname was derived from the inhabited by his father and his paternal ancestors zu Laden. The house of Gänsfleisch was one of the families of the town. Patricians in Mainz were often named after houses they owned, around 1427, the name zu Gutenberg, after the family house in Mainz, is documented to have been used for the first time. In 1411, there was an uprising in Mainz against the patricians, as a result, the Gutenbergs are thought to have moved to Eltville am Rhein, where his mother had an inherited estate. According to historian Heinrich Wallau, All that is known of his youth is that he was not in Mainz in 1430 and it is presumed that he migrated for political reasons to Strasbourg, where the family probably had connections
40.
Hand mould
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A hand mould is a simple mould used for low quantity work. It is used in the moulding and the printing industry. In the printing industry, a hand mould specifically refers to a two-part mould used for casting hand-made type, inside the mould is a matrix. In particular, it refers to a system for casting type, pioneered by Johannes Gutenberg. In this method, the type was made by punching a letter-shaped cavity in a made of some soft metal. Then this matrix would be held in the part of the mould, the upper part would close on it. Using the hand mould, the printer could quickly make any additional type he might need, in injection moulding, hand moulds refer to simple moulds that have no provision for heat, cooling, or ejection. This means when a hand mould is cycled universal heating plates are required to warm the moulds and this drastically increases the cycle time, which limits it to short runs, but to offset this is the low cost of the mould. They are usually single cavity moulds, but may be multi-cavity if the moulding is quite small and they are usually only of a two or three plate design because of the simplicity of the parts. If only a run is required then the moulds may be made from aluminum or brass. Hand cast bullets remain popular with the handloading, muzzleloading and small custom ammunition loading communities, in a tradition dating back to the beginning of firearms, molds matched to the bore are custom made for each weapon. Anywhere from one to six cavities are carved into the molding block, as the blocks are now usually made out of aluminum, which does not allow lead alloys to stick, only a small amount of parting compound is needed
41.
Alphabet
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An alphabet is a standard set of letters that is used to write one or more languages based upon the general principle that the letters represent phonemes of the spoken language. This is in contrast to other types of writing systems, such as syllabaries and logographies, the Proto-Canaanite script, later known as the Phoenician alphabet, is the first fully phonemic script. Thus the Phoenician alphabet is considered to be the first alphabet, the Phoenician alphabet is the ancestor of most modern alphabets, including Arabic, Greek, Latin, Cyrillic, Hebrew, and possibly Brahmic. Under a terminological distinction promoted by Peter T. Daniels, an alphabet is a script that represents both vowels and consonants as letters equally. In this narrow sense of the word the first true alphabet was the Greek alphabet, in other alphabetic scripts such as the original Phoenician, Hebrew or Arabic, letters predominantly or exclusively represent consonants, such a script is also called an abjad. A third type, called abugida or alphasyllabary, is one where vowels are shown by diacritics or modifications of consonantal letters, as in Devanagari. The Khmer alphabet is the longest, with 74 letters, there are dozens of alphabets in use today, the most popular being the Latin alphabet. Many languages use modified forms of the Latin alphabet, with additional letters formed using diacritical marks, while most alphabets have letters composed of lines, there are also exceptions such as the alphabets used in Braille. Alphabets are usually associated with an ordering of letters. This makes them useful for purposes of collation, specifically by allowing words to be sorted in alphabetical order and it also means that their letters can be used as an alternative method of numbering ordered items, in such contexts as numbered lists and number placements. The English word alphabet came into Middle English from the Late Latin word alphabetum, the Greek word was made from the first two letters, alpha and beta. The names for the Greek letters came from the first two letters of the Phoenician alphabet, aleph, which also meant ox, and bet, in the alphabet song in English, the term ABCs is used instead of the word alphabet. Knowing ones ABCs, in general, can be used as a metaphor for knowing the basics about anything, the history of the alphabet started in ancient Egypt. These glyphs were used as guides for logograms, to write grammatical inflections. Based on letter appearances and names, it is believed to be based on Egyptian hieroglyphs and this script had no characters representing vowels, although originally it probably was a syllabary, but unneeded symbols were discarded. An alphabetic cuneiform script with 30 signs including three that indicate the vowel was invented in Ugarit before the 15th century BC. This script was not used after the destruction of Ugarit, the Proto-Sinaitic script eventually developed into the Phoenician alphabet, which is conventionally called Proto-Canaanite before ca.1050 BC. The oldest text in Phoenician script is an inscription on the sarcophagus of King Ahiram and this script is the parent script of all western alphabets
42.
Lead
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Lead is a chemical element with atomic number 82 and symbol Pb. When freshly cut, it is bluish-white, it tarnishes to a dull gray upon exposure to air and it is a soft, malleable, and heavy metal with a density exceeding that of most common materials. Lead has the second-highest atomic number of the stable elements. Lead is a relatively unreactive post-transition metal and its weak metallic character is illustrated by its amphoteric nature and tendency to form covalent bonds. Compounds of lead are found in the +2 oxidation state. Exceptions are mostly limited to organolead compounds, like the lighter members of the group, lead exhibits a tendency to bond to itself, it can form chains, rings, and polyhedral structures. Lead is easily extracted from its ores and was known to people in Western Asia. A principal ore of lead, galena, often bears silver, Lead production declined after the fall of Rome and did not reach comparable levels again until the Industrial Revolution. Nowadays, global production of lead is about ten million tonnes annually, Lead has several properties that make it useful, high density, low melting point, ductility, and relative inertness to oxidation. In the late 19th century, lead was recognized as poisonous, Lead is a neurotoxin that accumulates in soft tissues and bones, damaging the nervous system and causing brain disorders and, in mammals, blood disorders. A lead atom has 82 electrons, arranged in a configuration of 4f145d106s26p2. The combined first and second ionization energies—the total energy required to remove the two 6p electrons—is close to that of tin, leads upper neighbor in group 14. This is unusual since ionization energies generally fall going down a group as an elements outer electrons become more distant from the nucleus, the similarity is caused by the lanthanide contraction—the decrease in element radii from lanthanum to lutetium, and the relatively small radii of the elements after hafnium. The contraction is due to shielding of the nucleus by the lanthanide 4f electrons. The combined first four ionization energies of lead exceed those of tin, for this reason lead, unlike tin, mostly forms compounds in which it has an oxidation state of +2, rather than +4. Relativistic effects, which become particularly prominent at the bottom of the periodic table, as a result, the 6s electrons of lead become reluctant to participate in bonding, a phenomenon called the inert pair effect. A related outcome is that the distance between nearest atoms in crystalline lead is unusually long, the lighter group 14 elements form stable or metastable allotropes having the tetrahedrally coordinated and covalently bonded diamond cubic structure. The energy levels of their outer s- and p-orbitals are close enough to allow mixing into four hybrid sp3 orbitals
43.
Tin
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Tin is a chemical element with symbol Sn and atomic number 50. It is a metal in group 14 of the periodic table. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide, Tin shows a chemical similarity to both of its neighbors in group 14, germanium and lead, and has two main oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, metallic tin is not easily oxidized in air. The first alloy used on a scale was bronze, made of tin and copper. After 600 BC, pure metallic tin was produced, pewter, which is an alloy of 85–90% tin with the remainder commonly consisting of copper, antimony, and lead, was used for flatware from the Bronze Age until the 20th century. In modern times, tin is used in alloys, most notably tin/lead soft solders. Another large application for tin is corrosion-resistant tin plating of steel, inorganic tin compounds are rather non-toxic. Because of its low toxicity, tin-plated metal was used for packaging as tin cans. However, overexposure to tin may cause problems with metabolizing essential trace elements such as copper and zinc, Tin is a soft, malleable, ductile and highly crystalline silvery-white metal. When a bar of tin is bent, a sound known as the tin cry can be heard from the twinning of the crystals. Tin melts at the low temperature of about 232 °C, the lowest in group 14, the melting point is further lowered to 177.3 °C for 11 nm particles. β-tin, which is stable at and above room temperature, is malleable, in contrast, α-tin, which is stable below 13.2 °C, is brittle. α-tin has a cubic crystal structure, similar to diamond. α-tin has no properties at all because its atoms form a covalent structure in which electrons cannot move freely. It is a dull-gray powdery material with no common uses other than a few specialized semiconductor applications and these two allotropes, α-tin and β-tin, are more commonly known as gray tin and white tin, respectively. Two more allotropes, γ and σ, exist at temperatures above 161 °C, in cold conditions, β-tin tends to transform spontaneously into α-tin, a phenomenon known as tin pest. Commercial grades of tin resist transformation because of the effect of the small amounts of bismuth, antimony, lead
44.
Antimony
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Antimony is a chemical element with symbol Sb and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite, Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Metallic antimony was known, but it was erroneously identified as lead upon its discovery. In the West, it was first isolated by Vannoccio Biringuccio, for some time, China has been the largest producer of antimony and its compounds, with most production coming from the Xikuangshan Mine in Hunan. The industrial methods for refining antimony are roasting and reduction with carbon or direct reduction of stibnite with iron, the largest applications for metallic antimony is an alloy with lead and tin and the lead antimony plates in lead–acid batteries. Alloys of lead and tin with antimony have improved properties for solders, bullets, Antimony compounds are prominent additives for chlorine and bromine-containing fire retardants found in many commercial and domestic products. An emerging application is the use of antimony in microelectronics, Antimony is in a pnictogen and has an electronegativity of 2.05. In accordance with periodic trends, it is more electronegative than tin or bismuth, Antimony is stable in air at room temperature, but reacts with oxygen if heated to produce antimony trioxide, Sb2O3. Antimony is resistant to attack by acids, four allotropes of antimony are known, a stable metallic form and three metastable forms. Elemental antimony is a brittle, silver-white shiny metalloid, when slowly cooled, molten antimony crystallizes in a trigonal cell, isomorphic with the gray allotrope of arsenic. A rare explosive form of antimony can be formed from the electrolysis of antimony trichloride, when scratched with a sharp implement, an exothermic reaction occurs and white fumes are given off as metallic antimony forms, when rubbed with a pestle in a mortar, a strong detonation occurs. Black antimony is formed upon cooling of antimony vapor. It has the crystal structure as red phosphorus and black arsenic, it oxidizes in air. At 100 °C, it transforms into the stable form. The yellow allotrope of antimony is the most unstable and it has only been generated by oxidation of stibine at −90 °C. Above this temperature and in ambient light, this metastable allotrope transforms into the more stable black allotrope, elemental antimony adopts a layered structure in which layers consist of fused, ruffled, six-membered rings. The nearest and next-nearest neighbors form an octahedral complex, with the three atoms in each double layer slightly closer than the three atoms in the next. This relatively close packing leads to a density of 6.697 g/cm3
45.
Font
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In metal typesetting, a font is a particular size, weight and style of a typeface. Each font was a set of type, one piece for each glyph. In modern usage, with the advent of digital typography, font is frequently synonymous with typeface, in particular, the use of vector or outline fonts means that different sizes of a typeface can be dynamically generated from one design. The word font derives from Middle French fonte melted, a casting, the term refers to the process of casting metal type at a type foundry. In a manual printing house the word font would refer to a set of metal type that would be used to typeset an entire page. Unlike a digital typeface it would not include a definition of each character. A font when bought new would often be sold as 12pt 14A 34a, meaning that it would be a size 12-point font containing 14 uppercase As, given the name upper and lowercase because of which case the metal type was located in, otherwise known as majuscule and minuscule. The rest of the characters would be provided in quantities appropriate for the distribution of letters in that language. Some metal type characters required in typesetting, such as dashes, spaces and line-height spacers, were not part of a specific font, line spacing is still often called leading, because the strips used for line spacing were made of lead. In the 1880s–90s, hot lead typesetting was invented, in which type was cast as it was set, either piece by piece or in entire lines of type at one time. In European alphabetic scripts, i. e. Latin, Cyrillic and Greek, the main properties are the stroke width, called weight, the style or angle. The regular or standard font is sometimes labeled roman, both to distinguish it from bold or thin and from italic or oblique. The keyword for the default, regular case is often omitted for variants and never repeated, otherwise it would be Bulmer regular italic, Bulmer bold regular, Roman can also refer to the language coverage of a font, acting as a shorthand for Western European. Different fonts of the same typeface may be used in the work for various degrees of readability and emphasis. The weight of a font is the thickness of the character outlines relative to their height. A typeface may come in fonts of many weights, from ultra-light to extra-bold or black, four to six weights are not unusual, many typefaces for office, web and non-professional use come with just a normal and a bold weight which are linked together. If no bold weight is provided, many renderers support faking a bolder font by rendering the outline a second time at an offset, the base weight differs among typefaces, that means one normal font may appear bolder than some other normal font. For example, fonts intended to be used in posters are often quite bold by default while fonts for long runs of text are rather light, therefore, weight designations in font names may differ in regard to the actual absolute stroke weight or density of glyphs in the font
46.
Gutenberg Bible
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The Gutenberg Bible was the first major book printed using mass-produced movable metal type in Europe. It marked the start of the Gutenberg Revolution and the age of the book in the West. Widely praised for its aesthetic and artistic qualities, the book has an iconic status. Written in Latin, the Catholic Gutenberg Bible is an edition of the Vulgate, printed by Johannes Gutenberg, in Mainz, in present-day Germany, in the 1450s. Since its publication,49 copies have survived, and they are considered to be among the most valuable books in the even though no complete copy has been sold since 1978. In March 1455, the future Pope Pius II wrote that he had seen pages from the Gutenberg Bible, being displayed to promote the edition and it is not known how many copies were printed, with the 1455 letter citing sources for both 158 and 180 copies. The 36-line Bible, believed to be the second printed version of the Bible, is sometimes referred to as a Gutenberg Bible. The Gutenberg Bible, an edition of the Vulgate, contains the Latin version of the Hebrew Old Testament and it is mainly the work of Jerome who began his work on the translation in 380 AD, with emendations from the Parisian Bible tradition, and further divergences. The Bible was not Gutenbergs first work, preparation of the Bible probably began soon after 1450, and the first finished copies were available in 1454 or 1455. It is not known exactly how long the Bible took to print, the first precisely datable printing is the Gutenbergs 31-line Indulgence which is known to already exist on 22 October 1454. Gutenberg made three significant changes during the printing process, the first sheets were rubricated by being passed twice through the printing press, using black and then red ink. This was soon abandoned, with spaces being left for rubrication to be added by hand, some time later, after more sheets had been printed, the number of lines per page was increased from 40 to 42, presumably to save paper. Therefore, pages 1 to 9 and pages 256 to 265, page 10 has 41, and from there on the 42 lines appear. The increase in number was achieved by decreasing the interline spacing. Finally, the print run was increased, necessitating resetting those pages which had already been printed, the new sheets were all reset to 42 lines per page. Consequently, there are two settings in folios 1-32 and 129-158 of volume I and folios 1-16 and 162 of volume II. The most reliable information about the Bibles date comes from a letter, in March 1455, the future Pope Pius II wrote that he had seen pages from the Gutenberg Bible, being displayed to promote the edition, in Frankfurt. It is not known how many copies were printed, with the 1455 letter citing sources for both 158 and 180 copies
