“In 1894 Professor John Joly of Dublin patented a process for producing a screen of red, green and blue-violet lines by ruling them on a gelatin-coated glass plate. Joly used ruling machines of great accuracy, with drawing pens trailed across ...
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Photomicrograph (20x) of a Joly screen. Credit: Courtesy of George Eastman House, International Museum of Photography and Film.
- Credit: Courtesy of George Eastman House, International Museum of Photography and Film.
- Source: Coe, Brian (1978): Colour Photography. The First Hundred Years 1840-1940. London: Ash & Grant.
- Credit: Gawain Weaver, Photograph Conservator, Gawain Weaver Art Conservation, San Anselmo, CA.
- Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 69.
- Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 22.
- Source: Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 23.