Patent ID: 9732240
Date: 2017-08-15
CPC Classifications: C09D

Claim:
1. An inkjet pigment ink, comprising: C.I. Pigment Red 122; a water-soluble solvent selected from the group consisting of a glycol ether and a diol; water; and a pigment dispersing resin which is copolymer consisting essentially of a monomer A, a monomer B, and a monomer C as unit components, wherein the C.I. Pigment Red 122 is a pigment subject to a hydrophilic treatment and has a transmittance of less than 70%, and wherein: the transmittance is a transmittance of an aqueous layer measured by a turbidimeter when a 1.00% by weight pigment is added to water, is shaken, and is left for an hour, and then the aqueous layer is collected, and is measured in a 50 mm angular cell; the monomer A is an alkyl (meth)acrylate ester having a C18-C24 alkyl group; the monomer B is styrene, α-methyl styrene, or benzyl (meth)acrylate; and the monomer C is (meth)acrylic acid.