Belcolor
Description
“Introduced in the mid-1930s by George Murphy, Inc., of New York City, Belcolor was considered one of the simplest ways to obtain color transparencies, as it required no special equipment or expert technique and could be used successfully without much practice. The product consisted of thin celluloid sheets coated with colored gelatin that were sensitized in a dichromate bath and, when dry, exposed in contact with separation negatives through the support. After development in warm water to eliminate unhardened gelatin, the dried reliefs were bound together in register between two pieces of glass to produce a finished transparency. A stripping Belcolor material was marketed in 1937; it enabled the gelatin reliefs to be stripped from the celluloid base and transferred onto a paper support (Dunn 1938:93) (Fig. 3.7). Belcolor products remained available until around 1950 (Koshofer 1981a).”
(Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, on p. 88.)
Secondary Sources
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, on p. 88. View Quote
