Patent ID: 8664291

Claim:
An ultraviolet-curable ink jet ink composition comprising: a monomer A represented by Formula (I): CH 2 ═CR 1 —COOR 2 —O—CH═CH—R 3 (I) (wherein R 1 represents a hydrogen atom or a methyl group, R 2 represents a C 2 -C 20 divalent organic residue, and R 3 represents a hydrogen atom or a C 1 -C 11 monovalent organic residue); a (meth)acrylated amine compound; a hindered amine compound other than the (meth)acrylated amine compound; and a photopolymerization initator, wherein the photopolymerization initiator includes 7% by mass or more of an acylphosphine oxide compound and 0.5% by mass or more of a thioxanthone compound, based on the total mass of the ink jet composition.