Ink composition capable of realizing print with improved fixation
AssigneeMikuni Color Ltd.
InventorsKazuaki Watanabe, Kiyohiko Takemoto, Shuichi Yamaguchi, Naoki Tanaka, Minoru Waki, Naoki Okamoto, Kazumi Adachi
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Abstract
An ink composition is provided which can realize printing with excellent fixation even on a coated paper having a smooth surface. Further, an ink composition is also provided which, when used in ink jet printing, causes neither clogging nor creation of a precipitate. A copolymer of butyl acrylate, methyl methacrylate, and acrylic acid is added to an ink composition.
Claims20
An ink composition comprising a resin and other components including a pigment an organic solvent, and water,
- wherein the resin is a copolymer comprising units represented by the following formulae (I), (II), and (III):
- said composition being prepared by a method comprising admixing the resin with the other components in a manner and in an amount that enhances a fixation property of a print formed by the Ink composition, wherein the copolymer has an acid value of 50 to 100 and a weight average molecular weight of 10,000 to 20,000.
An ink composition comprising a resin, a pigment, an organic solvent, and water,
- wherein the resin is a copolymer comprising units represented by the following formulae (I), (II), and (III):
- wherein the resin is not substantially absorbed on a surface of the pigment and is added to effectively enhance a fixation property of a print formed by the ink compositions and wherein the copolymer has an acid value of 50 to 100 and a weight average molecular weight of 10,000 to 20,000.
Dependencies are inferred from the claim text.