Patent ID: 6265117
Filing Date: 2001-07-24
Classification: G03C

Abstract:
A color imaging element comprising: (a) a diffusible dye formed upon a reaction of an oxidation product of a compound represented by formula (I) shown below together with a coupler represented by formula (1), (2), (3), (4), (5), (7), (8), (9), (10), (11), or (12) shown below, and (b) at least one water-soluble compound represented by formula (II) shown below on a support, the water-soluble compound being soluble in an aqueous 50 wt % methanol solution in an amount of at least 20 wt %: ##STR158##wherein Z represents a carbamoyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or a sulfamoyl group; and Q represents an atomic group necessary for forming an unsaturated ring together with the carbon atom; ##STR159##wherein X represents a hydrogen atom, a hydroxy group, an aliphatic group, an acyl group, an aliphatic oxy group, an aliphatic oxycarbonyl group or an aryloxycarbonyl group; Y.sub.1 and Y.sub.2, which may be the same or different, each represents a hydrogen atom or a substituent, or Y.sub.1 and Y.sub.2 may be combined with each other to form a 5-membered or 6-membered ring; Z.sub.1 represents a simple bond, a methylene group which may be substituted or an ethylene group which may be substituted; Z.sub.2 represents a methylene group which may be substituted; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents an aliphatic group, or R.sub.1 and R.sub.2 and R.sub.3 and R.sub.4 each may be combined with each other to form a 5-membered or 6 membered ring ##STR160## ##STR161##wherein in formulae (1) to (4), R.sup.14 represents an acyl group, an aryl group, a heterocyclic group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, a sulfamoyl group, an alkylsufonyl group or an arylsulfonyl group, each of which may have a substituent, or a cyano group or a nitro group;in formulae (1) to (3), R.sup.15 represents an alkyl group, an aryl group or a heterocyclic group, each of which may have a substituent;in formula (4), R.sup.16 represents an aryl group or a heterocyclic group, each of which may have a substituent;in formulae (1) to (4), R.sup.14 and R.sup.15 or R.sup.14 and R.sup.16 may be combined with each other to form a ring;in formula (5), R.sup.17 represents an alkyl group, an aryl group, an acyl group or a carbamoyl group and R.sup.18 represents a phenyl group or a phenyl group substituted with one or more halogen atoms, alkyl groups, cyano groups, alkoxy groups, alkoxycarbonyl groups or acylamino groups;in formulae (7) and (8), R.sup.20 represents a hydrogen atom or a group selected from --CONR.sup.22 R.sup.23, --SO.sup.2 NR.sup.22 R.sup.23, --NHCOR.sup.22, --NHCONR.sup.22 R.sup.23 and --NHSO.sub.2 NR.sup.22 R.sup.23 (wherein R.sup.22 and R.sup.23 each represents a hydrogen atom or a substituent);in formulae (7) and (8), R.sup.21 represents a substituent, l represents an integer of from 0 to 2, and m represents an integer of from 0 to 4, and when l or m is 2 or greater, the R.sup.21 groups may be the same or different;in formulae (9), (10), (11) and (12), R.sup.32, R.sup.33 and R.sup.34 each represent a hydrogen atom or a substituent; andin formulae (1) to (5) and (7) to (12), Y represents a group imparting diffusion resistant property to the coupler and capable of being released upon a coupling reaction with an oxidation product of the developing agent.