发明授权
- 专利标题： Process cartridge including developing unit and incorporated in image forming apparatus
- 专利标题（中）： 处理盒包括显影单元并结合在图像形成装置中
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申请号： US12360321申请日： 2009-01-27
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公开(公告)号： US08145100B2公开(公告)日： 2012-03-27
- 发明人: Yushi Hirayama , Shinji Kato , Takeroh Kurenuma , Keiichi Yoshida , Shin Hasegawa , Hitoshi Ishibashi , Yoshiaki Miyashita , Kohta Fujimori , Nobutaka Takeuchi , Tetsuya Muto , Akira Yoshida , Hiroyuki Uenishi
- 申请人： Yushi Hirayama , Shinji Kato , Takeroh Kurenuma , Keiichi Yoshida , Shin Hasegawa , Hitoshi Ishibashi , Yoshiaki Miyashita , Kohta Fujimori , Nobutaka Takeuchi , Tetsuya Muto , Akira Yoshida , Hiroyuki Uenishi
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 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： JP2008-016721 20080128; JP2008-068149 20080317
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
A process cartridge for use in an image forming apparatus includes an image bearing member and a developing unit. The developing unit includes a developer bearing member to bear developer including toner and carrier, a casing forming a developer container containing the developer, a screw having a shaft with a spiral screw blade, a toner density sensor to detect a density of the toner on a detection surface, and a detection surface agitating member fixedly mounted on the shaft of the screw at a position facing a detection surface to scrape away the developer accumulated on the detection surface as the screw rotates. The detection surface agitating member includes an elastic sheet elastically deformable to scrape away the developer accumulated on the detection surface and disposed at a substantially same angle to an axial direction of the shaft of the screw as the spiral screw blade.
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