Aqueous ink composition and image forming apparatus

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United States of America Patent

PATENT NO 9010915
APP PUB NO 20130050363A1
SERIAL NO

13588748

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Abstract

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Disclosed is an aqueous ink composition, including an aqueous solvent, a coloring agent dissolved or dispersed in the aqueous solvent, an ABA-type amphipathic polymer including a hydrophobic segment A and a hydrophilic segment B, and an anionic surfactant configured to dissolve or disperse the ABA-type amphipathic polymer in the aqueous solvent, wherein a viscosity of the aqueous ink composition is changed depending on a pH thereof.

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Patent Owner(s)

  • RICOH COMPANY, LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hasegawa, Aino Kanagawa, JP 18 141
Hihara, Takeshi Kanagawa, JP 7 66
Matsumoto, Takahiko Kanagawa, JP 35 206
Ohshima, Hisayoshi Kanagawa, JP 19 966
Sakuma, Hideomi Kanagawa, JP 9 123
Seo, Manabu Kanagawa, JP 41 419
Suzuki, Ryota Tokyo, JP 133 943
Takeuchi, Shigeo Kanagawa, JP 50 908
Tsukamoto, Takeo Kanagawa, JP 214 3485
Usui, Yuuma Kanagawa, JP 21 160
Yamashita, Hiroyuki Kanagawa, JP 224 2124

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