Patent ID: 8517527
Filing Date: 2013-08-27
Classification: B41M,C09D

Abstract:
1. An inkjet recording inkset comprising: a black ink; and at least one color ink, wherein the black ink and the color ink each comprise a coloring material, water, a water-soluble organic solvent and a surfactant, and wherein the black ink comprises, as the coloring material, a water-dispersible carbon black having a hydrophilic group on a surface of the carbon black, which can be dispersed without a dispersing agent, wherein only the black ink comprises, as the surfactant, a fluorine surfactant expressed by Chemical Formula 2: wherein Rf represents a fluorine-containing alkyl group, and n, m, and p each represent an integer of 0 or more; and only the color ink comprises, as the surfactant, a fluorine surfactant expressed by Chemical Formula 1: wherein Rf represents a fluorine-containing alkyl group, R1 represents an anionic group, R2 represents a cationic group, and q represents a positive integer.