Patent ID: 8273167

Claim:
A pigment dispersion composition comprising (A) an organic pigment, (B) a pigment derivative represented by Formula (I), and (C) a polymer compound having a pigment-adsorptive functional group: wherein, in Formula (I), Q represents an organic colorant residue having an aromatic ring; A represents an ethylene group, a phenylene group or a naphthylene group; R represents a hydroxyl group or a group represented by —NH-A-Z; Z represents a substituent selected from —SO 3 H, —COOH or a metal salt, ammonium salt or amine salt thereof; n represents an integer of from 1 to 4; when R represents —NH-A-Z, in the two —NH-A—Zs bonded to the triazine ring contained in each of the n partial structures (the structure in parentheses) bonded to Q in Formula (I), the groups represented by the two As may be the same as each other or different from each other, and the substituents represented by the two Zs may be the same as each other or different from each other.