Silver halide photographic light-sensitive material

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United States of America Patent

PATENT NO 4421845
SERIAL NO

06357149

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A silver halide photographic light-sensitive material which comprises at least one of those pyrazole compounds represented by the following general formula: ##STR1## wherein A is a group which can be eliminated in a photographic process condition; X is ##STR2## wherein R.sub.5 is a hydrogen atom or an alkyl, an aryl, an acyl or a sulfone group, which R.sub.5 group may combine together with R.sub.1 to form a condensed ring; R.sub.1 is a hydrogen atom or an alkyl, an aryl, an acyl, a sulfone, an alkoxy, or a heterocyclic residue; R.sub.2 is a hydrogen atom or an alkyl, an aryl, an alkoxy, an amino, an acid amide, a sulfonamide, a carboxyl, an alkoxycarbonyl, a carbamoyl, a cyano, or a halogenated alkyl group, R.sub.3 and R.sub.4 each is a hydrogen atom or an alkyl or an aryl group; and PUG is a photographically useful group which is released after elimination of the A group in a photographic processing condition and which has a hetero atom directly combined with the carbon substituted in the fourth position of the pyrazole nucleus.

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Patent Owner(s)

  • KONICA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kida, Shuji Hachioji, JP 42 246
Kishi, Kenichi Sagamihara, JP 11 51
Nakagawa, Satoshi Hino, JP 150 1907
Sugita, Hiroshi Hachioji, JP 66 772
Uemura, Morito Hino, JP 12 141

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