| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photocurable ink composition which suppresses additives from being precipitated during storage, and is also excellent in curability and scratch resistance. <P>SOLUTION: The photocurable ink composition contains at least a polymerizable compound and a photopolymerization initiator. The composition contains, as the polymerizable compound, 30-80 mass% of an allyl glycol and, as the photopolymerization initiator, at least one kind selected from the following compounds A-C in an amount satisfying the following formulas (1) and (2). (photopolymerization initiator) Compound A: bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide; compound B: bis(2,6-dimethoxybenzoyl)-2,4,4-trimethyl-pentylphosphine oxide, compound C: 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide. (blending amount) Formula (1):[content of compound A]×2+[content of compound B]×0.7+[content of compound C]>6 mass%. Formula (2): [content of compound A]<4 mass%. <P>COPYRIGHT: (C)2010,JPO&INPIT |
