Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1991-12-16

1993-02-16

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430264, 430569, 430583, 430584, 430585, 430588, 430605, 430957, G03C 1035

Patent

active

051870584

ABSTRACT:
A negative silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide emulsion containing regular silver halide grains containing from 0.3 mol % to 3.0 mol % of silver iodide, the silver halide grains being produced by conversion of silver halide host grains using high silver iodide silver halide grains having a silver iodide content of at least 90 mol % in an amount sufficient to provide from 0.1 mol % to 2.5 mol % of silver iodide based on the total silver halide content of the silver halide host grains and the high silver iodide grains.
The photographic material containing silver halide grains having a novel structure provides a negative image having excellent photographic characteristics, particularly high sensitivity and ultrahigh contrast.
A method of forming an ultrahigh contrast image which is excellent in line image quality using a stable developing solution is also disclosed.

REFERENCES:
patent: 4210450 (1980-07-01), Corben
patent: 4684604 (1987-08-01), Harder
patent: 4704349 (1987-11-01), Kriebel
patent: 4722884 (1988-02-01), Inoue et al.
patent: 4883737 (1989-11-01), Yamamoto
patent: 4999276 (1991-03-01), Kuwabara et al.
patent: 5006445 (1991-04-01), Yagihara et al.

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