发明申请
US20080187726A1 AQUEOUS INK, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS, AND IMAGE 有权
墨水喷墨,喷墨记录方法,墨盒,记录单元,墨水记录装置和图像

AQUEOUS INK, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS, AND IMAGE
摘要:
Provided is an aqueous ink with high storage stability and scratch resistance at such a high level that the coloring material of an image is not scraped off even when lightly touched with a sharp product. The aqueous ink includes a water-insoluble coloring material and plural polymers. The plural polymers include a polymer A which relatively contributes to dispersion of the water-insoluble coloring material and a polymer B which does not relatively contribute to the dispersion of the water-insoluble coloring material compared to the polymer A. The polymer 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 polymer B has an acid value of 150 mgKOH/g or less and a hydrogen bond parameter (δh) of the polymer obtained by solubility parameters of monomers constituting the polymer of 1.0 cal0.5/cm1.5 or more and 3.2 cal0.5/cm1.5 or less.
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