[Sample of Graphy Color C-56 process (Woman with necklace and ring)]
Photograph
Graphy Color Corp.
Maker
[Sample of Graphy Color C-56 process (Woman with necklace and ring)]
ca. 1932
Color print (Graphy Color C-56)
Image: 8 13/16 × 6 7/8 in. (22.4 × 17.5 cm)
Gift of Eastman Kodak Company Research Labs
1990.0201.0001
Inscriptions Inscribed in grease pencil on verso, BLC: C-56
Typed in black ink on attached typed label on recto, OA: C_56 \ Made by the Graphy Color Corp., New York City, about 1932. \ Luigi Cristiani, Italy, is the inventor of the process, which \ is a three-color process, done on cellophane, which is dyed \ and bichromated, exposed to separation negatives by arc lamps \ preferably, the images are then treated with potassium per_ \ manganate which oxidizes the dyes, except where the bichromate \ resist has been formed by exposure, the images are then cleared \ by sulfite and washed. \ British patent No. 367,386. U.S. Patent was abandoned.
Typed in black ink on attached typed label on recto, OA: C_56 \ Made by the Graphy Color Corp., New York City, about 1932. \ Luigi Cristiani, Italy, is the inventor of the process, which \ is a three-color process, done on cellophane, which is dyed \ and bichromated, exposed to separation negatives by arc lamps \ preferably, the images are then treated with potassium per_ \ manganate which oxidizes the dyes, except where the bichromate \ resist has been formed by exposure, the images are then cleared \ by sulfite and washed. \ British patent No. 367,386. U.S. Patent was abandoned.
