Silver halide photographic light-sensitive material and process for producing silver halide photographic emulsion
AssigneeFuji Photo Film Co., Ltd.
InventorsEiji Imatomi, Tsuyoshi Ogawa, Tsutomu Hamaoka
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AssigneeFuji Photo Film Co., Ltd.
InventorsEiji Imatomi, Tsuyoshi Ogawa, Tsutomu Hamaoka
Estimating the term…
A silver halide photographic light-sensitive material is described comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said silver halide emulsion layer containing a rhodium salt in an amount sufficient to increase a contrast thereof, and said silver halide emulsion layer or a layer adjacent thereto containing a compound represented by the following formula (I) or (II), and a process for producing a silver halide photographic emulsion containing rhodium salts is also described which comprises adding a rhodium salt into a silver halide photographic emulsion in an amount sufficient to increase a contrast before the conclusion of first ripening and adding a compound represented by the following formula (I) or (II) into the resulting emulsion after washing to remove useless salts ##STR1## wherein R.sub.1 represents hydrogen or a substituted or unsubstituted alkyl group. The silver halide photographic light-sensitive material and a silver halide photographic emulsion each is capable of providing high contrast images and stabilized photographic properties; particularly, gradation properties remain stable during storage.
A silver halide photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said silver halide emulsion layer containing a rhodium salt in an amount sufficient to increase a contrast thereof, and said silver halide emulsion layer or a layer adjacent thereto containing a compound represented by formula (I) or (II) ##STR4## wherein R.sub.1 represents hydrogen or a substituted or unsubstituted alkyl group.
A process for producing a silver halide photographic emulsion containing rhodium salts which comprises adding a rhodium salt into a silver halide photographic emulsion in an amount sufficient to increase a contrast before the conclusion of first ripening and adding a compound represented by formula (I) or (II) into the resulting emulsion after washing to remove useless salts ##STR5## wherein R.sub.1 represents hydrogen or a substituted or unsubstituted alkyl group.
Dependencies are inferred from the claim text.