发明授权
- 专利标题： Image forming apparatus capable of reducing an occurrence of developer depletion in a development unit
- 专利标题（中）： 能够减少显影单元中的显影剂耗尽的图像形成装置
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申请号： US11620539申请日： 2007-01-05
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公开(公告)号： US07796921B2公开(公告)日： 2010-09-14
- 发明人: Kiyonori Tsuda , Satoru Yoshida , Hiroya Hirose
- 申请人： Kiyonori Tsuda , Satoru Yoshida , Hiroya Hirose
- 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： JP2006-000603 20060105
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
An image forming apparatus includes an electrostatic latent image carrier carrying an electrostatic latent image and a development unit that develops the electrostatic latent image. The development unit includes a developer carrier, first, second, and third developer conveyers, and an opening area. The developer carrier is disposed opposing to the electrostatic latent image carrier. The first developer conveyer supplies a developer to the developer carrier. The second developer conveyer conveys the developer, and transports the developer to the first developer conveyer at a downstream side of the second developer conveyer. The third developer conveyer collects the developer, conveys the developer, and transports the developer to the second developer conveyer in a downstream side of the third developer conveyer. The opening area, disposed higher than a lowermost point of the first developer conveyer, allows the developer to drop from the first developer conveyer to the second developer conveyer.
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