Autotype Dyebro
Description
“Autotype Dyebro
Introduced around the same time as Colorsnap and Uvatype, Autotype Dyebro combined the three-color carbro and dye imbibition processes. The method was invented by Owen Wheeler (1859–1932) and commercialized by the Autotype Company in about 1929. From a set of separation negatives, three gelatin silver bromide prints were made with the image reversed. Plain Autotype Dyebro tissues (with a light gray pigment so that the image could be seen) were squeegeed into contact with the bromide prints. After fifteen minutes, the tissues were separated from the bromides and transferred onto unwaxed celluloid supports. Development in warm water followed, resulting in relief images on celluloid. The reliefs were immersed in Dyebro dyes. The dyes were transferred successively from the reliefs onto a prepared paper base for a full-color image. An alternative for the blue image was to use the bromide printed from the red separation negative and tone it blue (Wheeler 1930: 251). Transparencies could be made by binding together the three sheets of celluloid with their colored relief images in register between glass plates (Dunn 1936: 99). Dyebro remained fairly popular until the 1950s (Nadeau 1997:92).”
(Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, on p. 139.)
Secondary Sources
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, on p. 139 View Quote.
