| 摘要 |
PROBLEM TO BE SOLVED: To provide: an ink composition that can strike a balance between curability and flexibility of an image within a proper range and can prevent the image from cracking even if greater stress is applied thereon; image forming method using the composition; and a printed matter.SOLUTION: The ink composition comprises: a polymer (A) having a urethane bond or a urea bond contained in a main-chain structure and having a polymerizable group provided on a side chain; a polymerizable compound (B) other than the polymer (A); and a polymerization initiator (C). At least one terminal in the main-chain structure of the polymer (A) has one of: a fluorine-substituted hydrocarbon group (a1); a group (a2) containing a siloxane structure; and a long-chain alkyl group (a3). |
