Patent ID: 9056995
Filing Date: 2015-06-16
Classification: B41J,B41M,C09D

Abstract:
1. An inkjet recording ink set, comprising: a black pigment ink; and a color pigment ink, wherein the black pigment ink is a pigment dispersion liquid comprising a black pigment treated with an anionic surfactant and a black pigment coated with a resinous polymer, both dispersed in water, wherein the color pigment ink is a pigment dispersion liquid comprising a color pigment dispersed in water with a nonionic surfactant, wherein the black pigment ink and the color pigment ink each further comprise: a resin emulsion; a wetting agent; and a penetrating agent, wherein the penetrating agent in the black pigment ink is a polyoxyethylene alkyl ether-based surfactant, and wherein the penetrating agent in the color pigment ink is a fluorosurfactant.