Patent ID: 8152863

Claim:
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 1 represents an amino group, an aliphatic oxy group, an aliphatic group, or a heterocyclic group; R 2 represents a substituent; 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 2 's may be the same as or different from each other; 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 1 , R 2 , A, or G; when n represents 3, the azo pigment is a trimer in which three moieties each independently represented by Formula (1) are linked via R 1 , R 2 , A, or G; when n represents 4, the azo pigment is a tetramer in which four moieties each independently represented by Formula (1) are linked via R 1 , R 2 , A, or G; and Formula (1) is free from an ionic hydrophilic group: wherein, in Formulae (A-1) to (A-32), R 51 to R 59 each independently represent a hydrogen atom or a substituent; adjacent substituents may be bond to form a 5-membered or 6-membered ring; and * represents a binding position to an azo group in Formula (1).