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 {HEAD ~ an alkyl acrylate unit} having {TAIL ~ an alkyl group} of 12 or more carbon atoms and a acrylate unit having a urethane group 
having
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 { HEAD ~ an alkyl acrylate unit } having { TAIL ~ an alkyl group } of 12 or more carbon atoms and a acrylate unit having a urethane group
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH