history of printing methods
...stone, then on a tin plate, in order to engrave it in intaglio, Joseph-Nicephore Niepce in the 1820s established that certain chemical compounds are sensitive to light. This marked the origins of photogravure and led to both the invention of photography (between 1829 and 1838) and the use of photographic processes for the printed reproduction of photographs.
If the copy thus produced on paper is to be photographed to prepare printing plates by photogravure, cold type cannot be directly incorporated into photocomposition because of the intermediate operation.
The early work as described above formed the foundation for modern gravure engraving and printing. Karl Klič (also spelled Klietsch) of Bohemia, who was instrumental in making photogravure a practical commercial process, in 1878 exposed a positive transparency over carbon tissue, a film that was made of coloured gelatin sensitized with potassium dichromate and backed by a sheet of paper....
use in wallpaper production
...wallpaper industry. The 1950s and ’60s, however, brought more developments in wallpaper design and manufacture than any previous period. New processes enabled designers to decorate wallpaper with photogravure, and high-speed techniques were developed for the more traditional screen printing and woodblock methods. The wallpaper industry has kept abreast of modern trends in design, producing...