Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1992-06-18
1993-11-30
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430567, 430569, G03C 1035
Patent
active
052664503
ABSTRACT:
A silver halide photographic light-sensitive material comprising a support, and a plurality of silver halide emulsion layers formed on the support, at least one of the emulsion layers containing regular silver halide grains, at least 30% or more of which have dislocation lines internally, and the sensitivity specks in each of the grains having dislocation lines being distributed with the maximal value at the depth of about at least about 2 nm and less than 50 nm from the surface of the silver halide grains. The regular silver halide grains have a diameter of about 0.1 to 5.0 .mu.m, a variation coefficient of 20% or less in terms of the distribution of their sizes. Each of the grains has a surface comprising, mainly, a (100) face. The grains have high sensitivity achieved by increasing latent image forming efficiency, not light absorption. The light-sensitive material has a high storage stability.
REFERENCES:
patent: 4142900 (1979-03-01), Maskasky
patent: 4471050 (1984-09-01), Maskasky
patent: 4923793 (1990-05-01), Shibahasa
patent: 5011767 (1991-04-01), Yamashita et al.
The Theory of the Photographic Process, 4th edition, James (1977), pp. 19-21.
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
McPherson John A.
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