Patent ID: 7854797

Claim:
A porphyrazine coloring matter represented by the following formula (1) or a salt thereof: wherein, each of the rings A to D independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring, at least one or more thereof is a benzene ring and at least one of the rest is a nitrogen-containing heteroaromatic ring, E represents alkylene, X is an anilino group or a naphthylamino group, having at least one sulfo, carboxy or phosphono group, as a substituent, said anilino group or said naphthylamino group may be further substituted by one or more kinds of substituents selected from the group consisting of a sulfo group, a carboxy group, a phosphono group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, an amino group, a mono- or di-alkylamino group, a mono- or di-arylamino group, an acetylamino group, an ureide group, an alkyl group, a nitro group, a cyano group, a halogen atom, an alkylsulfonyl group and an alkylthio group, Y represents an amino group; a hydroxy group; a mono- or di-alkylamino group or a nitrogen-containing heterocyclic group, which may have one or more kinds of substituents selected from the group consisting of a sulfo group, a carboxy group, a phosphono group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, an amino group, a mono- or di-alkylamino group, a mono- or di-arylamino group, an acetylamino group, an ureide group, an alkyl group, a nitro group, a cyano group, a halogen atom, an alkylsulfonyl group and an alkylthio group; however, excepting for the combination in which Y is an amino group or a hydroxy group and X is a substituted anilino group, b is from 0 to 2.9, c is from 0.1 to 3, and the sum of b and c is from 1 to 3.