Control of dye release in color transfer assemblages using block

Details Control of dye release in color transfer assemblages using block Control of dye release in color transfer assemblages using block

1979-08-17

1981-02-10

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430223, 430239, 430542, 430543, 430559, G03C 140, G03C 700, G03C 554, G03C 110

Patent

active

042502454

ABSTRACT:
Hydroquinone esters are incorporated in photographic elements for color diffusion transfer assemblages and release a competing developer upon contact with a processing composition, to terminate further dye release. The hydroquinone esters are employed in a concentration sufficient, upon hydrolysis, to reduce substantially all the silver in the silver halide emulsion.

REFERENCES:
patent: 3246988 (1966-04-01), Porter et al.
patent: 3443939 (1969-05-01), Bloom et al.
patent: 3462266 (1969-08-01), Stewart
patent: 3816126 (1974-06-01), Charkoudian
"Photographic Processes and Products", Research Disclosure No. 15162, Nov. 1976, pp. 75-87.

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