AQUEOUS INK, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS, AND IMAGE

摘要

PROBLEM TO BE SOLVED: To provide an aqueous ink which has satisfactory stability of ink and is capable of achieving scratch resistance at such a high level that the coloring material of an image is not scraped off even when it is lightly touched with a sharp material such as nail.

SOLUTION: The aqueous ink comprises a water-insoluble coloring material and plural resins. The plural polymers include a resin A which relatively contributes to dispersion of the water-insoluble coloring material and a resin B which does not relatively contribute to the dispersion of the water-insoluble coloring material compared to the resin A. The resin A includes a block copolymer having an acid value of 120 mgKOH/g to 180 mgKOH/g and having an ethylene oxide group as a nonionic group. The resin B has an acid value of ≤150 mgKOH/g and a hydrogen bond parameter of the resin obtained by solubility parameters of monomers constituting the resin of ≥1.0 cal0.5/cm1.5and ≤3.2 cal0.5/cm1.5.

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