Color photographic silver halide light-sensitive material

Claim 2

A color photographic silver halide light-sensitive material exhibiting improved light fastness, comprising: a support base having thereon: a silver halide emulsion layer; a 1H-pyrazolo[3,3-C]-s-triazole coupler; and a compound represented by the formula (I): ##STR9## wherein R 1 is a hydrogen atom, an alkyl group, an aryl group, a silyl group, or a heterocyclic group; R 2 , R 3 , R 5 and R 6 are each a hydrogen atom, a hydroxyl group, an alkyl group, an aryl group, an alkoxyl group or an acylamino group; R 4 is an alkyl group, a hydroxyl group, an aryl group, a silyloxy group or an alkoxyl group; R 1 and R 2 may combine together to form a 5- or 5-membered ring, provided that R 4 is a hydroxyl group or an alkoxyl group, or R 1 and R 2 may combine together to form a methylenedioxy ring; and R 3 and R 4 may combine together to form a 5-membered hydrocarbon ring, provided that R 1 is an alkyl group, an aryl group, or a heterocyclic group.

Claim 3

A color photographic silver halide light-sensitive material as claimed in claim 1, wherein the coupler is represented by the formula (II): ##STR10## wherein R 7 and R 8 are each a hydrogen atom, an alkyl group, an alkylthio group, an aryl group, a heterocyclic ring consisting of from 5 to 6 atoms, an amino group, an acylamino group, a hydroxyl group, an alkoxyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, a sulfamoyl group or a sulfonamide group; and X is a hydrogen atom, a halogen atom, an alkoxyl group, an aryloxy group, an acyloxy group, a 5- or 6-membered heterocyclic oxy group, an alkylthio group, an arylthio group, a 5- or 6-membered heterocyclic ring thio group, or a group ##STR11## (wherein A 1 and A 2 are each a hydrogen atom, an alkyl group, an aryl group, a heterocyclic ring group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, or an alkoxycarbonyl group, provided that A 1 and A 2 are not hydrogen atoms at the same time; and A 1 and A 2 may combine together to form a 5- or 6-membered (6π or 10π electron system-constituting) aromatic heterocyclic group containing a nitrogen atom linked to a 5- or 6-membered ring formed in combination with a nitrogen atom, a nonaromatic saturated or unsaturated nitrogen-containing heterocyclic ring group, a cyclic imide group, a 2-N-1,1-dioxo-3-(2H)-oxo-1,2-benzisothiazolyl group (saccharin), or a saturated or unsaturated cyclic lactam ring group).

Claim 4

A color photographic silver halide light-sensitive material as claimed in claim 1, wherein the coupler is present in an amount in the range of 2×10 -3 to 5×10 -1 mol per mol of silver.

Claim 5

A color photographic silver halide light-sensitive material as claimed in claim 3, wherein the coupler is present in an amount in the range of 1×10 -2 to 5×10 -1 mol per mol of silver.

Claim 6

A color photographic silver halide light-sensitive material as claimed in claim 3, wherein the compound of formula (I) is present in an amount in the range of 10 to 200 mol% based on the amount of the coupler.

Claim 7

A coupler photographic silver halide light-sensitive material as claimed in claim 5, wherein the compound of formula (I) is present in an amount in the range of 30 to 100 mol% based on the amount of the coupler.