Patent ID: 7550037
Filing Date: 2009-06-23
Classification: C09D

Abstract:
1. An ink comprising a first coloring material, a second coloring material and a third coloring material, wherein the first coloring material is a compound represented by the following general formula (I), the second coloring material is a compound represented by the following general formula (II), and the third coloring material is a compound represented by the following general formula (III): wherein A is an aromatic or heterocyclic group which may be substituted, B is any group represented by the following general formulae (1) to (5), and M's are, independently of each other, a hydrogen atom, alkali metal, ammonium or organic ammonium, wherein R wherein groups R wherein D is a phenyl group having a substituent selected from the group consisting of a carboxyl group, a sulfonic group, a chlorine atom, a cyano group, a nitro group, a sulfamoyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, a sulfonic group or a carboxyl group, and an alkylsulfonyl group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group, sulfonic group or carboxyl group, E and F are, independently of each other, a paraphenylene group having a substituent selected from the group consisting of a carboxyl group, a sulfonic group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, a sulfonic group or a carboxyl group, and an alkylsulfonyl group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group, sulfonic group or carboxyl group, R