Silver halide photographic materials comprising blocked photogra

Details Silver halide photographic materials comprising blocked photogra Silver halide photographic materials comprising blocked photogra

1988-08-16

1989-12-19

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

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

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

430223, 430224, 430443, 430445, 430446, 430561, 430566, 430598, 430955, 430957, 430958, 430960, G03C 140, G03C 148, G03C 554

Patent

active

048882682

ABSTRACT:
A silver halide photographic material, which contains at least one blocked photographic reagent having in the molecule thereof at least one group selected from ##STR1## group and capable of releasing a photographically useful reagent by cleavage of the --N--C--bond by a nucleophilic attack of a nucleophilic reagent on the carbonyl group and a subsequent intramolecular electron transfer reaction or intramolecular nucleophilic reaction and which has at least one photosensitive silver halide emulsion layer, is photographically processed in the presence of an amine. A photographic 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 is provided along with a method of processing the photographic material.

REFERENCES:
patent: 4310612 (1982-01-01), Mooberry et al.
patent: 4358525 (1982-11-01), Mooberry et al.
patent: 4500636 (1985-02-01), Uno et al.
patent: 4554243 (1985-11-01), Ono et al.
patent: 4618563 (1986-10-01), Uno et al.
patent: 4629683 (1986-12-01), Itoh et al.
patent: 4772537 (1988-09-01), Itoh et al.

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