Hydroquinone ester blocked competing developers for color...

Details Hydroquinone ester blocked competing developers for color... Hydroquinone ester blocked competing developers for color...

G - Physics

03

C

96/141, 96/191,

G03C 1/40 (2006.01)

Patent

CA 1120761

ABSTRACT OF THE DISCLOSURE Hydroquinone esters are incorporated in photo- graphic elements for color diffusion transfer assemblages and release a competing developer upon contact with a processing composition, The hydroquinone esters are employed in a concentration sufficient, upon hydrolysis, to reduce substantially all the silver in the silver halide emulsion.

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