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US 4,735,893 AGranted
Silver halide color photographic light-sensitive material
AssigneeFuji Photo Film Co., Ltd.
InventorsMasakazu Morigaki, Toshio Kawagishi, Kiyoshi Nakazyo, Nobuo Seto, Sadao Kamei
Life of this patent
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Abstract
A silver halide color photographic light-sensitive material containing a combination of a pyrazolo-azole magenta coupler and a specific dye image stabilizing agent is disclosed. The stabilizing agent is effective to improve fastness of a dye image formed by the coupler to light, heat and moisture.
Claims21
A silver halide color photographic light-sensitive material comprising a support having provided thereon at least one layer containing at least one pyrazolo-azole coupler represented by the formula (I):
- ##STR19## wherein R.sub.1 represents a hydrogen atom or an organic substituent;
- X represents a hydrogen atom or a group releasable upon a coupling reaction with an oxidation product of an aromatic primary amine developing agent;
- Z.sub.a, Z.sub.b and Z.sub.c each represents a methine group, a substituted methine group, .dbd.N-- or --NH--, with the proviso that the case wherein Z.sub.a and Z.sub.b are nitrogen atoms and Z.sub.c is a methine group or a substituted methine group is excluded;
- the dotted line represents a single bond or a double bond and one of Z.sub.a -Z.sub.b bond and Z.sub.b -Z.sub.c bond is a double bond and the other is a single bond;
- when Z.sub.b -Z.sub.c is a carbon-carbon double bond, Z.sub.b -Z.sub.c may be a part of a condensed aromatic ring;
- when R.sub.1 or X is a divalent group, the compound of the general formula (I) may form a di- or polymer;
- and when Z.sub.a, Z.sub.b or Z.sub.c is a substituted methine group, the compound of the general formula (I) may form a di- or polymer;
- and
- at least one compound represented by the formula (II):
- ##STR20## wherein R and R', which may be the same or different, each represents an alkyl group;
- R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an acylamino group, a hydroxyl group or a halogen atom;
- at least one of OR and OR' may be taken together with any of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 that is in an ortho-position to OR or OR' to form a 5- or 6-membered ring;
- and at least one of pairs of R.sup.1, R.sup.2, R.sup.3 and R.sup.4, two groups constituting each pair being in an ortho-position to each other, may be taken together to form a 5- or 6-membered ring, with the proviso that OR' is in a position ortho or para to OR.
10 more elements
Dependencies are inferred from the claim text.