Invention Grant
- Patent Title: Aqueous ink composition and image forming apparatus
- Patent Title (中): 水性油墨组合物和成像设备
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Application No.: US13588748Application Date: 2012-08-17
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Publication No.: US09010915B2Publication Date: 2015-04-21
- Inventor: Yuuma Usui , Takeo Tsukamoto , Aino Hasegawa , Hideomi Sakuma , Manabu Seo , Hiroyuki Yamashita , Ryota Suzuki , Hisayoshi Ohshima , Takahiko Matsumoto , Shigeo Takeuchi , Takeshi Hihara
- Applicant: Yuuma Usui , Takeo Tsukamoto , Aino Hasegawa , Hideomi Sakuma , Manabu Seo , Hiroyuki Yamashita , Ryota Suzuki , Hisayoshi Ohshima , Takahiko Matsumoto , Shigeo Takeuchi , Takeshi Hihara
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2011-180766 20110822; JP2012-113608 20120517
- Main IPC: B41J2/175
- IPC: B41J2/175 ; C09D11/38 ; B41J2/21 ; C09D11/102 ; C08K5/00 ; C08K5/098
Abstract:
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.
Public/Granted literature
- US20130050363A1 AQUEOUS INK COMPOSITION AND IMAGE FORMING APPARATUS Public/Granted day:2013-02-28
Information query
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