Dnp Fine Chemicals Co., Ltd.

Ryohei Oka

Yukiko Ishima

Karuna Iwasawa

Katsumi Watanabe

Megumi Oogaki

Shinichi Yoshimitsu

An ink composition for inkjet recording, including: a color material, a binder resin, and an organic solvent, wherein the binder resin contains at least an acrylic-based resin (A), and a copolymer (B) having a constitutional unit derived from a hydroxyalkyl (meth)acrylate, a constitutional unit represented by the formula (I), and a constitutional unit represented by the formula (II), a content ratio by mass of the resin (A) to copolymer (B) is 25/75 to 70/30, and wherein the solvent contains at least a polyalkylene glycol dialkyl ether and a cyclic ester, a content ratio of the cyclic ester is 3 parts by mass or more and 10 parts by mass or less relative to 100 parts by mass of the ink composition, and a content ratio of the ethylene glycol alkyl ether acetate is 5 parts by mass or less relative to 100 parts by mass of the ink composition: 

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Yokohama, Japan

Ryohei Oka