| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an active radiation curing type ink composition in which curing sensitivity is high to irradiation of an active energy ray, excels in discharge property at the time of recording an image by an inkjet method, and is suitable for an inkjet recording application excellent in adhesion and blocking resistance to the recording medium of a recorded image. <P>SOLUTION: The ink composition includes: a polymerizable compound; a polymerization initiator; and a urethane oligomer or polymer which has a structure expressed by general formula (1) at the side chain. In general formula (1), R<SP POS="POST">1</SP>and R<SP POS="POST">2</SP>each independently denote a hydrogen atom or an alkyl group, and R<SP POS="POST">1</SP>and R<SP POS="POST">2</SP>may join together mutually and form a ring. <P>COPYRIGHT: (C)2012,JPO&INPIT |
