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US 4,526,864 AGranted
Silver halide photographic light-sensitive material
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsShun Takada, Kaoru Onodera, Takashi Kadowaki
Life of this patent
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Abstract
A silver halide photographic material. A support contains at least one silver halide emulsion layer that has in combination at least one cyan coupler of Formula I with at least one dye image stabilizer of Formula II or III.
Claims43
In a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer,
- said silver halide emulsion layer contains in combination at least one of those cyan couplers having the following Formula I and at least one of those compounds having the following Formula II or III:
- ##STR17## wherein R.sub.1 is an aryl radical or a heterocyclic radical;
- R.sub.2 is an alkyl radical or an aryl radical;
- R.sub.3 is a hydrogen atom, a halogen atom, an alkyl radical or an alkoxy radical;
- and Z.sub.1 is a hydrogen atom or a radical that can be split off by the reaction with the oxidized product of an aromatic primary amine color developing agent, ##STR18## wherein R.sub.4 and R.sub.5 each is an alkyl radical;
- R.sub.6 is a hydrogen atom, an alkyl radical, an --NHR.sub.6 ' radical, an --SR.sub.6 ' radical (wherein R.sub.6 ' is a monovalent organic radical) or a --COOR.sub.6 " radical (wherein R.sub.6 " is a hydrogen atom or a monovalent organic radical);
- and m is an integer of from 0 to 3, ##STR19## wherein R.sub.7 is a hydrogen atom, a hydroxyl radical, an oxy radical (--O radical), an --SOR.sub.7 ' radical, an --SO.sub.2 R.sub.7 " radical (wherein R.sub.7 ' and R.sub.7 " each is a monovalent organic radical), an alkyl radical, an alkenyl radical, an alkynyl radical or a --COR.sub.7 "' radical (wherein R.sub.7 "' is a hydrogen atom or a monovalent organic radical);
- each R.sub.8 is an alkyl radical;
- R.sub.9 and R.sub.10 each is a hydrogen atom or an --OCOR' radical (wherein R' is a monovalent organic radical), said R.sub.9 and said R.sub.10 together may form a heterocyclic radical;
- and n is an integer of from 0 to 4.
7 more elements
Dependencies are inferred from the claim text.