Method for producing silver halide photographic light-sensitive material

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United States of America Patent

PATENT NO 5468602
SERIAL NO

08333527

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Abstract

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A method for producing silver halide photographic light-sensitive material is disclosed. The method comprises the steps of (1) forming silver halide crystal nuclei, (2) growing the nuclei to form a silver halide emulsion, (3) chemically sensitizing the silver halide emulsion with a selenium compound, and (4) coating and drying the silver halide emulsion on a support, and a compound represented by formula I is added to the silver halide emulsion during the time between the moment of completion of the nuclei forming step and the moment of completion of the chemically sensitizing step. ##STR1## In the formula R.sub.1 is a hydrogen atom, a straight or branched alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an alkoxyl group, an aryl group, a heterocyclic group, a carbamoyl group, a thiocarbamoyl group or a sulfamoyl group; R.sub.2 and R.sub.3 are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, a cyano group, an alkylthio group, an arylthio group, alkylsulfoxido group, an alkylsulfonyl group or a heterocyclic group, and the groups each represented by R.sub.2 and R.sub.3 may be combined with each other to form a benzene ring.

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Patent Owner(s)

Patent OwnerAddress
KONICA CORPORATION26-2 NISHISHINJUKU 1-CHOME SHINJUKU-KU TOKYO 163-0512

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takahashi, Shigeaki Hino, JP 13 198

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