A non aqueous pigment ink comprising a pigment, a non aqueous solvent, and non aqueous resin dispersion microparticles having a pigment dispersion capability, wherein the non aqueous resin dispersion microparticles are an acrylic polymer comprising an alkyl acrylate unit having {HEAD ~ an alkyl group} of {TAIL ~ 12 or more carbon atoms} and a acrylate unit having a urethane group 
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A non aqueous pigment ink comprising a pigment , a non aqueous solvent , and non aqueous resin dispersion microparticles having a pigment dispersion capability , wherein the non aqueous resin dispersion microparticles are an acrylic polymer comprising an alkyl acrylate unit having { HEAD ~ an alkyl group } of { TAIL ~ 12 or more carbon atoms } and a acrylate unit having a urethane group
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