Silver halide photographic materials containing a photographic r

Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...

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430218, 430223, 430443, 430445, 430446, 430566, 430955, 430957, 430958, 430959, 430960, G03C 140, G03C 554, G03C 108

Patent

active

047725370

ABSTRACT:
A silver halide photographic material which contains at least one blocked photographic reagent having in the molecule thereof at least one ##STR1## structure and capable of releasing a photogrpahically useful reagent by cleavage of the ##STR2## bond by a nucleophilic attack of a nucleophilic reagent on the structure and a subsequent intramolecular electron transfer reaction or an intramolecular nucleophilic reaction and which has at least one photosensitive silver halide emulsion layer. There is provided a photogrphic material which includes, in combination, a photographic reagent precursor capable of releasing a photographically useful reagent timely on photographic processing and a photosensitive silver halide emulsion layer.

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