Carbon tissue
Chemical used in printing / From Wikipedia, the free encyclopedia
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Carbon tissue is a gelatin-based emulsion used as a photoresist in the chemical etching (photoengraving) of gravure cylinders[1] for printing. This was introduced by British physicist and chemist Joseph Swan[2][3] in 1864.[4] It has been used in photographic reproduction since the early days of photography.[5]
Carbon materials marketing began in 1866 by Joseph Swan which he subsequently sold to the Autotype Company in 1868.[6] His ready-made tissues were in three colours black, sepia and purple-brown.[1][3] This method was used in Europe and USA throughout the 19th century and well into the 20th.[1] This market was almost closed in the 1950s although some companies produce small amount of carbon tissue and transfer papers for monochrome and three-color work until around 1990[1][3]