Invention Grant
- Patent Title: Development device and image forming apparatus using the same
- Patent Title (中): 显影装置和使用其的图像形成装置
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Application No.: US12776752Application Date: 2010-05-10
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Publication No.: US08306464B2Publication Date: 2012-11-06
- Inventor: Takeshi Maeyama , Toshiya Natsuhara , Junya Hirayama , Shigeo Uetake , Makiko Watanabe
- Applicant: Takeshi Maeyama , Toshiya Natsuhara , Junya Hirayama , Shigeo Uetake , Makiko Watanabe
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2009-115346 20090512
- Main IPC: G03G15/08
- IPC: G03G15/08

Abstract:
Provided is a development device and an image forming apparatus both using a hybrid development method and capable of forming high quality images without occurrence of development hysteresis (ghost). The nip portion of the toner carrier and the developer carrier is configured as follows: the rotating direction of a toner carrier and a developer carrier are in counter directions; a magnetic pole facing the toner carrier is positioned on the upstream side in the developer carrier rotating direction; and a counter charge generated by the toner supply reaches a toner recovering portion without being considerably attenuated.
Public/Granted literature
- US20100290820A1 DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS USING THE SAME Public/Granted day:2010-11-18
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