Patent ID: 6235099
Filing Date: 2001-05-22
Classification: C09D

Abstract:
A water-dispersed inkjet recording liquid containing, as a colorant, a water-based dispersion of an organic pigment (A) which is at least one member selected from the group consisting of a quinacridone pigment, a benzimidazolone pigment, an insoluble azo pigment, a fused azo pigment, a quinophthalone pigment, a naphthol pigment, a perylene pigment and an isoindolinone pigment and has an average particle diameter of 10 to 150 nm measured by laser scattering, the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture of the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A) and a water-soluble solvent (C) at 30 to 65.degree. C. to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water.