Radiation imagery chemistry: process – composition – or product th – Achromatic image produced from chromatic reproduction image
Patent
1985-04-29
1987-07-07
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Achromatic image produced from chromatic reproduction image
430359, 430360, 430361, 430364, 430390, 430391, 430394, 430402, 430952, G03C 702, G03C 718, G03C 732, G03C 720
Patent
active
046787402
ABSTRACT:
A photographic matte for use in traveling matte photography is formed by recording a separation of a first screen-color separation of an image on a first film layer and recording a separation of a different second color on a second layer. Preferably, the second color is complementary to the screen color. One layer is developed to form a positive image and the other to form a negative image, these images reinforcing each other. One image is formed by black dye, using a coupler and a color developer and the other is formed by a black dye destruct technique in which the developed portion of the silver halide emulsion is removed. According to another aspect of the invention, a matte of increased density can be formed without commensurate image growth by combining a black dye image with a silver image.
REFERENCES:
patent: 827241 (1906-07-01), Hyde
patent: 2336380 (1943-12-01), Wilmanns
patent: 3158477 (1964-11-01), Vlahos
patent: 3497350 (1965-06-01), Yutzy et al.
patent: 3674490 (1972-07-01), Matejec
patent: 4304847 (1981-12-01), Nakamura et al.
"Journal of the Society of Motion Picture and Television Engineers", vol. 74, No. 3, Mar. 1965, `Traveling-Matte Photography and the Blue-Screen System` by Beyer, Walter.
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