Invention Grant
- Patent Title: Toner and image forming apparatus
- Patent Title (中): 调色剂和成像设备
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Application No.: US13743528Application Date: 2013-01-17
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Publication No.: US08795938B2Publication Date: 2014-08-05
- Inventor: Osamu Uchinokura , Tomoyuki Satoh , Takahiro Honda , Daisuke Inoue , Mamoru Hozumi
- Applicant: Osamu Uchinokura , Tomoyuki Satoh , Takahiro Honda , Daisuke Inoue , Mamoru Hozumi
- 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: JP2012-016688 20120130
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G15/08 ; G03G9/097

Abstract:
To provide a toner, which contains: toner base particles each containing a binder resin and a colorant; and an external additive containing inorganic particles and fatty acid metal salt particles, wherein the inorganic particles contain at least hydrophobic silica particles, wherein a liberation ratio Ya of the hydrophobic silica particles from the toner is 1% by mass to 20% by mass, and wherein a libration ratio Yb of the fatty acid metal salt particles from the toner is 30% by mass to 90% by mass.
Public/Granted literature
- US20130196261A1 TONER AND IMAGE FORMING APPARATUS Public/Granted day:2013-08-01
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