Copolymer, aqueous ink, and ink cartridge
AssigneeRicoh Company, Ltd.
InventorsShigeyuki HARADA, Yoshiki YANAGAWA, Keita KATOH, Masayuki FUKUOKA, Kazukiyo NAGAI, Yuusuke KOIZUKA, Tomoyuki SHIMADA, Akiyoshi SABU
Life of this patent
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Abstract
To provide a copolymer including: a structural unit represented by the following General Formula (1) where X represents a hydrogen atom or a cation; a structural unit expressed by the following Structural Formula (1); and a structural unit represented by the following General Formula (2) where R is a hydrogen atom or a methyl group, L is a single bond or —(CH2)n—O—CO— where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the —(CH2)n—O—CO— is bound to naphthyl.
Claims10
A copolymer comprising:
- a structural unit represented by the following General Formula (1);
- a structural unit expressed by the following Structural Formula (1);
- and
- a structural unit represented by the following General Formula (2),
- wherein in the General Formula (1), X represents a hydrogen atom or a cation,
- wherein in the General Formula (2), R is a hydrogen atom or a methyl group, L is a single bond or —(CH2)n—O—CO— where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the —(CH2)n—O—CO— is bound to naphthyl.
An inkjet recording device comprising:
- an ink jetting unit configured to apply a stimulus to an aqueous ink to jet the aqueous ink and record an image on a recording medium,
- wherein the aqueous ink comprises:
- water;
- a colorant;
- and
- a copolymer,
- and wherein the copolymer is a copolymer comprising:
- a structural unit represented by the following General Formula (1);
- a structural unit expressed by the following Structural Formula (1);
- and
- a structural unit represented by the following General Formula (2),
- wherein in the General Formula (1), X represents a hydrogen atom or a cation,
- wherein in the General Formula (2), R is a hydrogen atom or a methyl group, L is a single bond or —(CH2)n—O—CO— where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the —(CH2)n—O—CO— is bound to naphthyl.
Dependencies are inferred from the claim text.