发明授权
- 专利标题: Cleaning device, image forming apparatus, and process cartridge
- 专利标题(中): 清洁装置,图像形成装置和处理盒
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申请号: US12030608申请日: 2008-02-13
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公开(公告)号: US08041281B2公开(公告)日: 2011-10-18
- 发明人: Naomi Sugimoto , Hidetoshi Yano , Kenji Sugiura , Osamu Naruse , Yasuyuki Yamashita
- 申请人: Naomi Sugimoto , Hidetoshi Yano , Kenji Sugiura , Osamu Naruse , Yasuyuki Yamashita
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company Limited
- 当前专利权人: Ricoh Company Limited
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2007-033713 20070214
- 主分类号: G03G21/00
- IPC分类号: G03G21/00
摘要:
A cleaning device removes residual toner particles from a cleaning target, such as a photoconductor, which has a moving surface. The cleaning device includes a cleaning brush, a power circuit, and a cleaning member. The cleaning brush includes a brush rotation shaft, and the power circuit applies a first voltage of a first polarity to the brush rotation shaft. The cleaning member applies a second voltage of the first polarity to the cleaning brush. If the first polarity is negative, the cleaning member electrostatically removes toner particles having a positive polarity from the cleaning target. Then, the cleaning brush is triboelectrically charged to a second polarity, which is opposite to the first polarity, by contacting the cleaning target. Accordingly, the cleaning brush also removes residual toner particles having a negative polarity. Thus, the cleaning device removes both positively and negatively charged toner particles to clean the cleaning target.