INK COMPOSITION, INK JET RECORDING METHOD, PRINTED MATERIAL, BISACYL PHOSPHINE OXIDE COMPOUND, AND MONOACYL PHOSPHINE OXIDE COMPOUND

摘要

The object of the present invention is to provide an ink composition that is excellent in terms of adhesion to a recording medium, for which there is little leaching out (migration) of a component in the cured ink film, and that gives a printed material with suppressed odor, and an inkjet recording method and a printed material employing the ink composition, and also to provide a novel acylphosphine oxide compound. The ink composition of the present invention contains an acylphosphine oxide compound having an acyl group comprising a polymerizable functional group, and a polymerizable compound.