Silver halide photographic materials

Details Silver halide photographic materials Silver halide photographic materials

1988-10-19

1994-02-08

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, 430584, 430603, 430605, 430611, G03C 1035

Patent

active

052847438

ABSTRACT:
A silver halide photographic material comprising at least one photosensitive emulsion layer contains silver halide grains on a support. In the silver halide photographic material, (1) the silver halide grains are prepared in the presence of iridium compounds, (2) the silver halide grains consist of silver chlorobromide which is essentially free of silver iodide, (3) at least 90 mol% of all silver halide from which the silver halide grains are made is silver chloride, (4) the silver halide grains have localized phase in which the silver bromide content exceeds at least 20 mol%, (5) the localized phase is precipitated together with at least 50% of all the iridium which is added during the preparation of the silver halide grains, and (6) the surface of the silver halide grains is chemically sensitized to the extent that the grains are essentially of the surface latent image type.

REFERENCES:
patent: 4564591 (1986-01-01), Tanaka et al.
patent: 4605610 (1986-08-01), Klotzer
patent: 4746603 (1988-05-01), Yamashita et al.
patent: 4849324 (1989-07-01), Aida et al.
patent: 4863844 (1989-09-01), Okumura et al.
patent: 4939080 (1990-07-01), Hioki et al.
patent: 4960689 (1990-10-01), Nishikawa et al.
patent: 5057402 (1991-10-01), Shiba et al.
Research Disclosure, No. 181, May 1971, pp. 265-268.
Photographic Science and Engineering, vol. 24, No. 6, Nov./Dec. 1980, pp. 265-267.
Photographic Science and Engineering, vol. 27, No. 2, Mar./Apr. 1983, pp. 81-94.

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