发明名称 |
Electrostatic imaging device having means for removing undesirable particles from a brush charger and transcribing roller |
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.
|
申请公布号 |
US5966563(A) |
申请公布日期 |
1999.10.12 |
申请号 |
US19970944641 |
申请日期 |
1997.10.06 |
申请人 |
NEC CORPORATION |
发明人 |
KASHIHARA, MABUMI;WATANABE, TOSHIMI |
分类号 |
G03G15/02;G03G15/16;(IPC1-7):G03G15/02;G03G21/00 |
主分类号 |
G03G15/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|