Internal latent image-type silver halide emulsion

Details Internal latent image-type silver halide emulsion Internal latent image-type silver halide emulsion

1984-05-11

1987-01-27

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430568, 430940, 430409, 430603, 430604, 430605, G03C 128

Patent

active

046394168

ABSTRACT:
An internal latent image-type silver halide emulsion containing core/shell type silver halide grains with a mean grain size of about 0.4 .mu.m or less, the grains comprising a core of chemically sensitized silver halide and a shell of silver halide covering at least the light-sensitive sites of the core and the surface of the grains being chemically sensitized wherein the core is chemically sensitized to such an extent that the difference between fog density F.sub.1 and fog density F.sub.2 as defined herein (i.e., internal fog density) is at least 0.10. This emulsion permits the formation of good reversal images in which D.sub.max is high and D.sub.min is low and, furthermore, has a superior storage stability.

REFERENCES:
patent: 3317322 (1967-05-01), Porter et al.
patent: 3761276 (1973-09-01), Evans
patent: 4035185 (1977-07-01), Evans et al.
patent: 4431731 (1984-02-01), Sugimoto et al.
patent: 4444865 (1984-04-01), Silverman et al.

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