Diffusion transfer material and process

Details Diffusion transfer material and process Diffusion transfer material and process

G - Physics

03

C

96/111, 96/194,

G03C 8/22 (2006.01) C09B 29/00 (2006.01) C09B 43/30 (2006.01)

Patent

CA 1214352

Abstract Diffusion transfer material and process. A photographic material for diffusion transfer photography eon- taining a quinonoid compound, which is capable in reduced state and under alkaline conditions of releasing a dye moiety for the produc- tion of a dye image and corresponds to the following general formula (G): Image wherein : R8 is hydrogen or methyl in the 6- or 7-position (indicated by an asterisk) on the saturated adjacent ring part of the qui- nonoid nucleus, R9 is an alkyl group or a substituted alkyl group, an aromatic group or a substituted aromatic group, R10 is hydrogen, an alkyl group or an aryl group, and at least one of the substituents R9 and R10 represents or includes a ballasting group of sufficient size to render said compound immobile in an alkali-permeable hydrophilic colloid layer when such layer is permeated with an aqueous alkaline liquid.

439954

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