Hu Zhengyan was a Chinese artist, printmaker and publisher. He worked in calligraphy, traditional Chinese painting, and seal-carving, but was primarily a publisher, producing academic texts as well as records of his own work.
One of Hu Zhengyan's personal seals
Hu's former residence in Xiuning
Examples of Hu Zhengyan's seal carving
Fruit (Persimmon and Three Yellow Tangerines) from the Ten Bamboo Studio Manual of Painting and Calligraphy, showing the colour gradation achieved through Hu Zhengyan's printing methods.
Color printing or colour printing is the reproduction of an image or text in color.
Bijin (beautiful woman) ukiyo-e by Keisai Eisen, before 1848
Philibert-Louis Debucourt, The Public Promenade, 1792. Printed in color from various plates, using etching, engraving, and aquatint. One of the leading achievements of the French 18th-century color-print.
The first widely reproduced image printed using the three-color process, by William Kurtz (January 1893)
Image: First lithographic print in the primary triad of colors Red by Boston Public Library