Invention Grant
- Patent Title: Charging device including charging roller and cleaning roller
- Patent Title (中): 充电装置包括充电辊和清洁辊
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Application No.: US12273183Application Date: 2008-11-18
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Publication No.: US07680429B2Publication Date: 2010-03-16
- Inventor: Muraishi Takaya , Hiromichi Ninomiya , Atsushi Sampe , Yoshiyuki Kimura , Hiroyuki Nagashima , Hiroshi Hosokawa , Ken Amemiya , Toshio Koike , Tokuya Ojimi , Takaaki Tawada , Takeshi Shintani , Yuji Arai , Takuji Yoneda , Masanori Kawasumi , Masami Tomita
- Applicant: Muraishi Takaya , Hiromichi Ninomiya , Atsushi Sampe , Yoshiyuki Kimura , Hiroyuki Nagashima , Hiroshi Hosokawa , Ken Amemiya , Toshio Koike , Tokuya Ojimi , Takaaki Tawada , Takeshi Shintani , Yuji Arai , Takuji Yoneda , Masanori Kawasumi , Masami Tomita
- 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: JP2004-032364 20040209; JP2004-034369 20040212; JP2004-081155 20040319
- Main IPC: G03G15/02
- IPC: G03G15/02

Abstract:
A charging device, a process cartridge, and an image forming apparatus are provided. The charging device includes a charging roller configured to charge an image carrier and a cleaning roller configured to clean the charging roller while making contact with a surface of the charging roller. The charging device further includes a bearing member including a first portion configured to rotatably support a rotational shaft of the charging roller and a second portion configured to rotatably support a rotational shaft of the cleaning roller. The charging device also includes an elastic member provided outside of the second portion of the bearing member with respect to an axial direction of the rotational shaft of the cleaning roller such that the charging roller makes contact with the image carrier when the first portion of the bearing member is pressed by the elastic member.
Public/Granted literature
- US20090087213A1 CHARGING DEVICE INCLUDING CHARGING ROLLER AND CLEANING ROLLER Public/Granted day:2009-04-02
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