发明授权
US5966563A Electrostatic imaging device having means for removing undesirable
particles from a brush charger and transcribing roller
失效
静电成像装置具有用于从刷充电器和转录辊去除不需要的颗粒的装置
- 专利标题： Electrostatic imaging device having means for removing undesirable particles from a brush charger and transcribing roller
- 专利标题（中）： 静电成像装置具有用于从刷充电器和转录辊去除不需要的颗粒的装置
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申请号： US944641申请日： 1997-10-06
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公开(公告)号： US5966563A公开(公告)日： 1999-10-12
- 发明人: Mabumi Kashihara , Toshimi Watanabe
- 申请人： Mabumi Kashihara , Toshimi Watanabe
- 申请人地址： JPX Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX8-263974 19961004
- 主分类号： G03G15/02
- IPC分类号： G03G15/02 ; G03G15/16 ; G03G21/00
摘要：
An electrostatic imaging device has a photoreceptor drum, an exposure unit to form a latent image on the photoreceptor, a developing unit for forming a toner pattern on the photoreceptor, a transcribing roller for electrifying the photoreceptor drum and transcribing the toner pattern onto a recording sheet, a brush charger for electrifying the photoreceptor drum, and a power supply section for applying a first negative voltage to the transcribing roller and a second negative voltage to the brush charger during a period other than an image forming period. The second voltage is lower than the first voltage in absolute value. Undesirable particles having a positive potential and attached to the brush charger is collected to the photoreceptor drum for cleaning the brush charger.