| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultraviolet-curable inkjet ink composition excellent in the durability of an inkjet head and furthermore superior in discharge reliability. <P>SOLUTION: The ultraviolet-curable inkjet ink composition containing monomers and a photoinitiator contains a monomer satisfying a condition that an SP value (σ) derived from the formula of Small is expressed by ¾σ-10.5¾≥1.0 in an amount within a range of 20 mass% or more based on the total mass of the ink composition, contains a monomer satisfying a condition that the SP value (σ) is expressed by 0.5≤¾σ-10.5¾<1.0 in an amount within a range of 20 mass% or more based on the total mass of the ink composition, contains a monomer satisfying a condition that the SP value (σ) is expressed by ¾σ-10.5¾<0.5, if the monomer is contained, in an amount within a range of 20 mass% or less based on the total mass of the ink composition, and discharges from the inkjet head using an epoxy-based adhesive. <P>COPYRIGHT: (C)2013,JPO&INPIT |
