作者: Hiroki Nakane , Yusuke Mizutaki , Eiji Okamoto
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摘要: An ultraviolet ray-curable clear ink composition includes a polymerizable compound; and photopolymerization initiator, in which the compound contains vinyl ether group-containing (meth)acrylic acid ester represented by following formula (I) 5% mass to 25% of urethane oligomer with respect total composition. CH 2 ═CR 1 —COOR —O—CH═CH—R (I) (in (I), R represents hydrogen atom or methyl group; divalent organic residue having 20 carbon atoms; 3 monovalent 11 atoms)