An ink composition of the present invention is disclosed, which contains (i) a sensitizing dye represented by the following Formula (I); (ii) at least one polymerization initiator selected from the group consisting of α-aminoketones and acyl phosphine oxides; and (iii) an ethylenically unsaturated bond-containing polymerizable compound. In Formula (I), X represents O, S or NR; n represents an integer of 0 or 1; R represents a hydrogen atom, an alkyl group or an acyl group; R1 to R8 each independently represent a hydrogen atom or a monovalent substituent; R1 and R2, R2 and R3, and R3 and R4 may be connected to each other to form a ring; and R5 or R6 may be connected to R7 or R8 to form an aliphatic ring but not to form an aromatic ring.
本发明公开了一种油墨组合物,它含有(i)由下式(I)表示的敏化
染料;(ii)至少一种聚合
引发剂,该
引发剂选自α-
氨基酮和酰基膦氧化物组成的组;和(iii)含
乙烯不饱和键的可聚合化合物。在式(I)中,X 代表 O、S 或 NR;n 代表 0 或 1 的整数;R 代表氢原子、烷基或酰基;R1 至 R8 各自独立地代表氢原子或一价取代基;R1 和 R2、R2 和 R3 以及 R3 和 R4 可相互连接以形成环;R5 或 R6 可与 R7 或 R8 连接以形成脂肪族环,但不能形成芳香族环。