发明授权
- 专利标题： Apparatus for judging life of photoconductor
- 专利标题（中）： 用于判断光电导体寿命的装置
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申请号： US935896申请日： 1992-08-26
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公开(公告)号： US5278612A公开(公告)日： 1994-01-11
- 发明人: Koichi Inui
- 申请人： Koichi Inui
- 申请人地址： JPX Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX3-217216 19910828
- 主分类号： G03G21/00
- IPC分类号： G03G21/00 ; G03G15/00 ; G03G15/02
摘要：
An image forming apparatus has a charging roller disposed in contact with a photoconductor having a photoconducting layer for charging the surface of the photoconductor, and a photoconductor life judging device including an element for detecting the change of the value of the current flowing through the charging roller and an element for judging the photoconductor life on the basis of the change of the current value.
公开/授权文献
- US4886655A Method of detecting infection or immunity in ruminants 公开/授权日：1989-12-12
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