| 摘要 |
PROBLEM TO BE SOLVED: To provide an active energy ray-curable ink composition that has curability with active energy rays, is suitable for curing with active energy rays of a metal halide lamp, a high-pressure mercury lamp, or the like emitting UV rays at wavelengths of 200 to 420 nm, and significantly decreases temperature dependency and print speed dependency of ink tackiness.SOLUTION: An active energy ray-curable ink composition contains the following acrylate monomer by 25 to 50 wt.% with respect to the whole composition, and further contains a vegetable oil-modified (meth)acrylate. The acrylate monomer has a surface tension of 28 to 35 mN/m and an acryl equivalent (molecular weight per one acryloyl group) of 140 or more. |
