INKJET RECORDING INK COMPOSITION, INKJET RECORDING METHOD, METHOD OF MANUFACTURING LITHOGRAPHIC PRINTING PLATE, AND LITHOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide: an inkjet recording ink composition that is cured at high sensitivity to irradiation of radioactive ray and with which a high-quality image can be formed, wherein a cured product to be obtained by curing an ink has sufficient flexibility; an inkjet recording method using the ink composition; a lithographic printing plate produced with the ink composition and capable of forming a high-quality image; and a method of producing the lithographic printing plate.SOLUTION: An inkjet recording ink composition comprises (A) a polymerization initiator, (B) a (meth)acrylic acid ester or amide having 1,3-dioxolane ring skeleton or 1,3-dioxan ring skeleton, and (C) a colorant. A content of the component (B) based on the whole ink composition is 3 to 35 mass% on a solid conversion basis. It is preferable that the ink composition comprises (D) other polymerizable compounds and (E) a sensitizing dye.