发明申请
- 专利标题： IMAGE FORMING APPARATUS
- 专利标题（中）： 图像形成装置
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申请号： US12271478申请日： 2008-11-14
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公开(公告)号： US20090129792A1公开(公告)日： 2009-05-21
- 发明人: Takao Izumi , Hiroshi Murata , Minoru Yoshida , Takashi Hatakeyama
- 申请人： Takao Izumi , Hiroshi Murata , Minoru Yoshida , Takashi Hatakeyama
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： KABUSHIKI KAISHA TOSHIBA,TOSHIBA TEC KABUSHIKI KAISHA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA,TOSHIBA TEC KABUSHIKI KAISHA
- 当前专利权人地址： JP Tokyo JP Tokyo
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
According to an embodiment of the invention, degradation of carrier in a case is detected from the number of rotations of a developing roller. A predetermined quantity of carrier is replenished every time the developing roller reaches a predetermined number of rotations. An excess developer caused by an increase in bulk through carrier replenishment is discharged from a developer discharge port. The degraded old carrier in the case is replaced by new carrier little by little.