Patent ID: 8092869

Claim:
An ink composition for ink jet recording, comprising: (A) a N-vinyllactam, (B) a compound comprising a partial structure represented by the following formula (I) and a polymerizable unsaturated bond, and (C) a radical polymerization initiator, wherein in formula (I), R 1 represents a hydrogen atom or an alkyl group, and R 2 to R 5 each independently represent a methyl group or an ethyl group, wherein the N-vinyllactam is N-vinylcaprolactam, and the compound comprising a partial structure represented by formula (I) and a polymerizable unsaturated bond is represented by the following formula (II): wherein R 1 represents a hydrogen atom or an alkyl group, R 2 to R 5 each independently represents a methyl group or an ethyl group, R 6 represents a methyl group or a hydrogen atom, and Z represents an alkylene group having from 1 to 20 carbon atoms or an alkylene group having from 1 to 20 carbon atoms and one or more divalent groups selected from the group consisting of —CO, —O—, —S— and —NR 7 — in a methylene chain, and R 7 represents a hydrogen atom or an alkyl group.