发明授权
- 专利标题： Development device and image forming apparatus incorporating same
- 专利标题（中）： 包含其的显影装置和图像形成装置
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申请号： US14059585申请日： 2013-10-22
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公开(公告)号： US09046821B2公开(公告)日： 2015-06-02
- 发明人: Tomoya Ohmura , Akira Azami , Toshio Koike , Masaaki Yamada , Hiroaki Okamoto
- 申请人： Tomoya Ohmura , Akira Azami , Toshio Koike , Masaaki Yamada , Hiroaki Okamoto
- 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, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2012-234221 20121023; JP2013-209660 20131004
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
A developing device to develop with two-component developer an electrostatic latent image includes a developer bearer to carry thereon developer supplied to the latent image bearer, a first conveyance channel disposed adjacent to the developer bearer, a second conveyance channel disposed adjacent to the first conveyance channel and farther from the developer bearer than the first conveyance channel, a first conveying member disposed in the first conveyance channel to agitate and transport developer supplied to the developer bearer, a second conveying member including a spiral blade winding around a shaft to transport developer in the second conveyance channel in a predetermined developer conveyance direction, and a collected-developer guide to guide a part of developer that leaves the developer bearer to the second conveyance channel beyond the first conveyance channel.