Invention Grant
US08523992B2 Magenta recording ink composition, inkjet recording method, and ink recorded matter
有权
洋红色记录油墨组合物,喷墨记录方法和墨水记录物质
- Patent Title: Magenta recording ink composition, inkjet recording method, and ink recorded matter
- Patent Title (中): 洋红色记录油墨组合物,喷墨记录方法和墨水记录物质
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Application No.: US12811271Application Date: 2009-01-20
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Publication No.: US08523992B2Publication Date: 2013-09-03
- Inventor: Akihiko Matsuyama , Yuji Natori
- Applicant: Akihiko Matsuyama , Yuji Natori
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-011161 20080122
- International Application: PCT/JP2009/051141 WO 20090120
- International Announcement: WO2009/093721 WO 20090730
- Main IPC: C09D11/02
- IPC: C09D11/02

Abstract:
The present invention provides a magenta recording ink composition including at least a solid solution pigment (A) containing quinacridone, a lake pigment (B) having a xanthene structure, an aqueous solvent, and water, wherein the solid solution pigment (A) has visible light absorption peaks at wavelength ranges of from 510 nm to 530 nm and from 540 nm to 560 nm, and a mass ratio (B/A) of the lake pigment (B) to the solid solution pigment (A) falls within the range of 0.1 to 5.
Public/Granted literature
- US20100285287A1 MAGENTA RECORDING INK COMPOSITION, INKJET RECORDING METHOD, AND INK RECORDED MATTER Public/Granted day:2010-11-11
Information query
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