Negative silver halide photographic emulsion

Details Negative silver halide photographic emulsion Negative silver halide photographic emulsion

1988-12-09

1989-11-28

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430568, G03C 102

Patent

active

048837482

ABSTRACT:
A negative silver halide photographic emulsion comprising silver halide grains dispersed in a binder, the silver halide grains having the ratio of diameter to thickness of 5.0 or less, the grains further having an internal portion corresponding to half the volume of the silver halide grains and a surface portion corresponding to half the volume of the silver halide grains, wherein the average iodine content in the internal portion is less than 1 mol %, and wherein the average iodine content in the surface portion of the grains is 1 to 4 mol % higher than the average iodine content of the internal portion of the grains.

REFERENCES:
patent: 4585729 (1986-04-01), Sugimoto et al.
patent: 4623612 (1986-11-01), Nishikawa et al.
patent: 4806461 (1989-02-01), Ikeda et al.

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