Direct positive silver halide light-sensitive photographic mater

Details Direct positive silver halide light-sensitive photographic mater Direct positive silver halide light-sensitive photographic mater

1988-02-02

1989-09-19

Shah, Mukund J.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, 430940, G03C 102, G03C 100

Patent

active

048681024

ABSTRACT:
A light-sensitive silver halide direct-positive photographic material which comprises a support and, provided thereon a light-sensitive direct-positive silver halide emulsion layer containing silver halide grains having an internal latent image and a core-shell structure comprising a core and at least one shell stratum either partly or entirely covering said core, the outermost stratum of said shell having been formed in the presence of a nitrogen-containing heterocyclic compound having a mercapto group therein.

REFERENCES:
patent: 4395478 (1983-07-01), Hoyen
patent: 4481285 (1984-11-01), Takagi et al.
patent: 4582779 (1986-04-01), Kubota et al.

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