Photographic sensitive materials for color diffusion transfer pr

Details Photographic sensitive materials for color diffusion transfer pr Photographic sensitive materials for color diffusion transfer pr

1981-04-07

1982-06-01

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430217, 430379, 430509, G03C 176

Patent

active

043328857

ABSTRACT:
Photographic sensitive materials for a color-diffusion transfer process which are particularly useful in a wide variety of temperature and climate conditions are disclosed. The materials are comprised of a red-sensitive emulsion layer; a green-sensitive emulsion layer; and a blue-sensitive emulsion layer on a support wherein at least one of the layers is comprised of a plurality of additional layers. Two or more of the additional layers are direct reversal photographic emulsion layers of higher and lower sensitivity which are not previously fogged. The emulsion layer having lower sensitivity has a gradation of 1.8 or more resulting in a hard tone.

REFERENCES:
patent: 3779764 (1973-12-01), Moll et al.
patent: 3849138 (1974-11-01), Wyckoff
patent: 3923513 (1975-12-01), Evans
patent: 4035185 (1977-07-01), Evans et al.
patent: 4082553 (1978-04-01), Groet

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