Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1996-05-17
1998-03-03
Huff, Mark F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430569, 430506, 430566, G03C 1035, G03C 142
Patent
active
057232776
ABSTRACT:
Disclosed is a silver halide emulsion containing tabular silver halide grains in such an amount that the projected area of the tabular silver halide grains accounts for 30% or more of the entire projected area of silver halide grains contained in the emulsion, the tabular silver halide grains having: (1) a multiple structure comprising one inner shell and one or more outer shells positioned outside of the inner shell, wherein the outermost shell of the outer shells contains 50 mol % or more of silver chloride and at least one of the outer shells and the inner shell which are positioned inside of the outermost shell contains 50 mol % or more of silver bromide; (2) {100} faces as two main planes parallel to each other; and (3) an aspect ratio of 2 or more. The silver halide emulsion is excellent in rapid processing suitability, has high sensitivity, and shows photographic performance such as superior graininess.
REFERENCES:
patent: 5565315 (1996-10-01), Yamashita
patent: 5637446 (1997-06-01), Yamashita
Fuji Photo Film Co. , Ltd.
Huff Mark F.
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