Patent ID: 8871013
Filing Date: 2014-10-28
Classification: C09D

Abstract:
1. An ink comprising a first coloring material and a second coloring material, wherein; the first coloring material comprises a compound represented by the following general formula (1), and the second coloring material comprises a compound represented by the following general formula (2): wherein rings A, B, C and D each indicated by a broken line are, independently of one another, a benzene ring or a nitrogen-containing heteroaromatic ring, the number of the nitrogen-containing heteroaromatic ring is more than 0.0 and 3.0 or less, the remainder is the benzene ring, R 1 is an alkyl group, R 2 is an alkylene group, X is an anilino group having one or more sulfonic groups, with the proviso that X may have one or more substituents selected from the group consisting of a carboxy group, a phosphoric group, a hydroxy group, an alkoxy group, an alkylcarbonylamino group, a ureido group, a nitro group and a halogen atom, m is more than 0.0 and less than 3.9, n is 0.1 or more and less than 4.0, and the sum of m and n is 1.0 or more and less than 4.0; wherein rings A, B, C and D each indicated by a broken line are, independently of one another, a benzene ring or a nitrogen-containing heteroaromatic ring, X 1 , X 2 , X 3 and X 4 are, independently of one another, —SO—Z, —SO 2 —Z, —SO 2 NR 1 R 2 , —SO 3 M, —CONR 1 R 2 or —CO 2 R 1 , a 1 , a 2 , a 3 and a 4 are respective numbers of substituents of X 1 , X 2 , X 3 and X 4 and are, independently of one another, 1.0 or more and 2.0 or less, Z is a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, R 1 and R 2 are, independently of each other, a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, M is a hydrogen atom, an alkali metal, ammonium or organic ammonium, and at least one of X 1 , X 2 , X 3 and X 4 is a group represented by the following general formula (3): wherein a ring E indicated by a broken line is a benzene ring or a nitrogen-containing heteroaromatic ring, R 1 is a linking group containing an atom selected from the group consisting of sulfur, nitrogen, oxygen and carbon in a main chain thereof and linking the phthalocyanine ring to the ring E indicated by the broken line by a covalent bond, and Y 1 and Y 2 are, independently of each other, a hydrogen atom, a halogen atom, an alkyl group, an aryl group, a cyano group, an alkoxy group, an amide group, a ureido group, a sulfonamide group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, a carboxy group, a sulfonic group, an amino group or a substituted or unsubstituted anilino group.