Handschiegl color process
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The Handschiegl color process (U.S. patent 1,303,836, U.S. patent 1,303,837, App: Nov 20, 1916, Iss: May 13, 1919) produced motion picture film prints with color artificially added to selected areas of the image. Aniline dyes were applied to a black-and-white print using gelatin imbibition matrices.