A type of color film that contains two color emulsion layers for simultaneous exposure. The two emulsion layers of the film contain minute oily globules with color couplers that reacted to form the colored dyes. The two color cans either be placed in separate overlaying layers or integrated on a single support (called integral bipack). Bipacks were used extensively in early color motion picture photography. In 1902, the first two color process cinematography was successfully photographed by Davidson and Jumeaux (Nadeau 1997). By 1932, much of the industry was switching to three color films (tripacks).
Synonyms and Related Terms
integral bipack; bi-pack (Br.); two-color photographic processes; The following company dates and names extracted from Nadeau 1997): Cinecolor [Cinecolor Lab, 1930s-1950]; Americolor ; Brewster [1915-1930]; Cinemacolor [Cinemacolor Corp., 1934]; Coloratura (Pathe Exchange, 1931]; Douglass Color [1916-1918]; Harriscolor ; Kesdacolor ; Kinemacolor originally 3-color, reduced to 2- color in 1906] Kodachrome [Kodak 1916-1935]; Magnacolor [Consolidated Film Ind., 1922-1946]; Prizmacolor [1917-1928]; Trucolor [Consolidated Film Ind., 1946-1949]
° Luis Nadeau, Encyclopedia of Printing, Photographic, and Photomechanical Processes, Atelier, New Brunswick, 1997