Patent ID: 8557889

Claim:
An ink composition comprising a sensitizer represented by the following Formula (I), a photopolymerization initiator, and a polymerizable compound having an ethylenic unsaturated bond: wherein in Formula (I), R 1 , R 6 and R 8 each independently represent a hydrogen atom, a hydroxyl group, a halogen atom, a linear or branched alkyl group which may be substituted, or an alkoxy group which may be substituted, R 2 , R 4 , R 5 and R 7 each independently represent a hydrogen atom, a linear or branched alkyl group which may be substituted, a halogen atom, or a cyano group, R 3 represents a linear or branched alkyl group which is substituted with —NR 9 R 10 , a hydroxy group, an acryloyloxy group, or a metacryloyloxy group, or a cycloalkyl group which is substituted with —NR 9 R 10 , a hydroxy group, an acryloyloxy group, or a metacryloyloxy group, R 9 and R 10 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R 9 and R 10 may bond to each other to form a ring, and when R 3 represents a linear or branched alkyl group, the alkyl group may consist of two or more alkyl chains that are connected to each other via one or more oxygen atom.