Methods for producing photographic silver halide emulsions
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United States of America Patent
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Nov 25, 1997
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app pub date -
Sep 6, 1996
filing date -
Sep 8, 1995
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Abstract
A method for producing a silver halide emulsion having a silver chloride content of 50 mol % or more and containing silver halide grains in which (111) faces occupy 30% or more of their surface area, wherein said silver halide grains are formed in the presence of a pyridinium salt crystal habit modifier, and a thiocyanate and a sensitizing dye are added prior to a washing step of emulsion production, thereby removing the crystal habit modifier out of the emulsion to eliminate the side effect caused thereby and to improve photographic characteristics.
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