| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an active energy ray-curable type ink having a curing property by an active energy ray, designed to make UV ray irradiated by a light-emitting diode for generating UV ray of which a light-emitting peak wavelength is particularly in a range of 350-420 nm as a curing wavelength, having excellent curing property relative to the UV ray irradiated by the light-emitting diode for generating the UV ray of which the light-emitting peak wavelength is in a range of 350-420 nm, and being also excellent in storage stability. <P>SOLUTION: The active energy ray-curable type ink contains a light cleavage type polymerization initiator (A) having a molar extinction coefficient at a wavelength of 365 nm of 100 (l/mol*cm) or more, a hydrogen abstract type polymerization initiator (B) having a molar extinction coefficient at a wavelength of 365 nm of 1,000 (l/mol*cm) or more, a tertiary amine compound (C) having a molar extinction coefficient at a wavelength of 365 nm of 1 (l/mol*cm) or less, a specific copolymer (D), further a resin, a pigment and a monomer. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
