Patent ID: 8152863
Filing Date: 2012-04-10
Classification: C09B,G02B,G03F

Abstract:
1. A pigment dispersion composition, comprising: an azo pigment represented by the following Formula (1); at least one compound selected from the group consisting of an organic pigment derivative having an acidic functional group, an anthraquinone derivative having an acidic functional group, and a triazine derivative having an acidic functional group; and a dispersant: wherein, in Formula (1), G represents a hydrogen atom, an aliphatic group, an aryl group, or a heterocyclic group; R A represents any one of groups represented by the following Formula (A-1) to (A-32); m represents an integer of 0 to 5; when m represents an integer of 2 to 5, plural R n represents an integer of 1 to 4; when n represents 2, the azo pigment is a dimer in which two moieties each independently represented by Formula (1) are linked via R when n represents 3, the azo pigment is a trimer in which three moieties each independently represented by Formula (1) are linked via R when n represents 4, the azo pigment is a tetramer in which four moieties each independently represented by Formula (1) are linked via R Formula (1) is free from an ionic hydrophilic group: wherein, in Formulae (A-1) to (A-32), R