Amidrazones as dye components and developer scavengers in diffus

Details Amidrazones as dye components and developer scavengers in diffus Amidrazones as dye components and developer scavengers in diffus

1972-07-03

1976-01-20

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 3, 96 56, 96 77, G03C 700, G03C 554, G03C 140

Patent

active

039334937

ABSTRACT:
A quick diffusion transfer process of forming color positive images by combining a photosensitive material portion prepared by superposing a photosensitive silver halide emulsion layer containing an amidrazone which becomes diffusible by an oxidation treatment (Type A) with an intermediate layer containing an amidrazone which does not become diffusible by the oxidation treatment (Type B) and an image-receiving material portion prepared by coating a composition containing an acid resistant coupler capable of forming a dye by the oxidative coupling with an amidrazone, exposing and black-and-white-developing the combined materials, subjecting material to an oxidation treatment in the superposed relationship to form color images, and then removing said photosensitive material portion.
A combined photographic material for forming color positive images having the above-mentioned photosensitive material portion and the image-receiving material portion on different supports respectively or on the same support in a superposed relationship.
A color positive image forming process comprising superposing an image of a color other than the amidrazone system utilizing a color developing system with the color positive image obtained above.

REFERENCES:
patent: 3180734 (1965-04-01), Willems et al.
patent: 3384484 (1968-05-01), Schranz et al.
patent: 3467520 (1969-09-01), Puschel et al.
patent: 3628952 (1971-12-01), Puschel et al.
patent: 3730713 (1973-05-01), Abbott

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