Invention Grant
- Patent Title: Cleaning unit, process cartridge, and image forming apparatus using the same
- Patent Title (中): 清洁单元,处理盒和使用其的成像装置
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Application No.: US12031333Application Date: 2008-02-14
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Publication No.: US07929897B2Publication Date: 2011-04-19
- Inventor: Naomi Sugimoto , Hidetoshi Yano , Kenji Sugiura , Osamu Naruse , Yasuyuki Yamashita
- Applicant: Naomi Sugimoto , Hidetoshi Yano , Kenji Sugiura , Osamu Naruse , Yasuyuki Yamashita
- 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: JP2007-033718 20070214
- Main IPC: G03G21/00
- IPC: G03G21/00

Abstract:
A cleaning apparatus for removing charged particles includes a cleaning brush and a recovery unit. The cleaning brush removes the charged particles from an object by attracting the charged particles having positive and negative polarity. The recovery unit for recovering the charged particles from the cleaning brush includes a recovery member, a first charge applicator, a second charge applicator, and a voltage control unit. The recovery member is supplied with a voltage to attract the charged particles. The recovery member has a core and a surface layer. The first charge applicator applies a voltage to the surface layer of the recovery member. The second charge applicator applies a voltage to the core of the recovery member. The voltage control unit controls a polarity of the voltage to be applied by the first and second charge applicators depending on a polarity of the charged particles to be recovered.
Public/Granted literature
- US20080193179A1 CLEANING UNIT, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS USING THE SAME Public/Granted day:2008-08-14
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