Patent ID: 7959279

Claim:
An ink composition comprising: (A) a polymerization initiator; (B) a (meth)acrylic acid ester or amide having an alicyclic group as a substituent and, represented by the following formula (I) or (II): wherein R 1 represents a hydrogen atom or a methyl group; R 2 to R 12 each independently represents a hydrogen atom or an alkyl group, with the proviso that at least two of R 2 to R 12 respectively represent an alkyl group; Z represents an oxygen atom or —NR 13 —; R 13 represents a hydrogen atom or an alkyl group; and X represents a single bond or a divalent organic group; and (C) another polymerizable compound, wherein the ink composition has a viscosity of from 7 to 30 mPa•s within an ejecting temperature range of from 25 to 50 ° C.