Patent ID: 7297197

Claim:
An ink jet ink comprising at least a coloring material, wherein the coloring material is a compound represented by the following general formula (I) or a salt thereof; and the ink jet ink comprises an amine compound represented by the following general formula (II): wherein M represents an alkali metal or ammonium; R 1 and R 2 each independently represent a hydrogen atom, a sulfonic group, or a carboxyl group, provided that R 1 and R 2 are not simultaneously a hydrogen atom; Y represents a chlorine atom, a hydroxyl group, an amino group, or a monoalkylamino or dialkylamino group; 1 represents 0 to 2, m represents 1 to 3, and n represents 1 to 3, provided that 1 m+n=3 to 4; and positions at which substituents are present are the 4- or 4′-positions; NR 1 R 2 R 3 General formula (II) wherein R 1 , R 2 and R 3 each independently represent a hydrogen atom, an alkyl group, a lower hydroxyalkyl group, a cyclohexyl group, a mono- or di-alkylaminoalkyl group, a lower cyanoalkyl group, or a phenyl group which may be substituted, provided that all of R 1 , R 2 and R 3 are not simultaneously a hydrogen atom, and wherein the ink jet ink further comprises, as a water-soluble organic solvent, 2-pyrrolidone and polyethylene glycol, the polyethylene glycol having a molecular weight of 200 or more.