Silver halide photographic materials containing a photographic reagent precursor

摘要

A silver halide photographic material which contains at least one blocked photographic reagent having in the molecule thereof at least one structure and capable of releasing a photogrpahically useful reagent by cleavage of the 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.