发明申请
- 专利标题： DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS INCORPORATING SAME
- 专利标题（中）： 开发装置，工艺盒和成像装置的图像形成装置
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申请号： US13355020申请日： 2012-01-20
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公开(公告)号： US20120207492A1公开(公告)日： 2012-08-16
- 发明人: Yoshihiro FUJIWARA , Kunihiro OHYAMA , Masayuki YAMANE , Hideki KIMURA , Masaki TAKAHASHI , Toshiki HAYASHI
- 申请人： Yoshihiro FUJIWARA , Kunihiro OHYAMA , Masayuki YAMANE , Hideki KIMURA , Masaki TAKAHASHI , Toshiki HAYASHI
- 优先权： JP2011-029056 20110214
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
A development device includes a developer container for containing developer, a developer bearer to carry by rotation the developer contained in the developer container to a development range facing a latent image bearer, a partition dividing the developer container into an upper compartment and a lower compartment arranged vertically, an upper developer conveyance member disposed in the upper compartment, a lower developer conveyance member disposed in the lower compartment, a communication portion through which the developer moves from the lower compartment to the upper compartment, disposed in a downstream end portion of the lower compartment in a direction in which the lower developer conveyance member transports the developer, and a toner concentration detector to detect a concentration of toner in the developer beneath the communication portion inside the lower compartment.