Invention Grant
- Patent Title: Developing device and image forming apparatus provided with same
- Patent Title (中): 显影装置和图像形成装置
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Application No.: US13788708Application Date: 2013-03-07
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Publication No.: US08843035B2Publication Date: 2014-09-23
- Inventor: Tamotsu Shimizu , Shizuka Okada
- Applicant: KYOCERA Document Solutions Inc.
- Applicant Address: JP
- Assignee: Kyocera Document Solutions Inc.
- Current Assignee: Kyocera Document Solutions Inc.
- Current Assignee Address: JP
- Agent Gerald E. Hespos; Michael J. Porco; Matthew T. Hespos
- Priority: JP2012-056688 20120314
- Main IPC: G03G15/09
- IPC: G03G15/09 ; G03G15/08

Abstract:
A developing device includes a developer bearing member, a layer restricting member, a facing magnet and a nonmagnetic member. The developer bearing member has a sleeve for bearing magnetic toner and a fixed magnet included inside the sleeve. The layer restricting member faces one magnetic pole of the fixed magnet, is arranged at a distance from the sleeve and made of a magnetic material. The facing magnet is arranged upstream of the layer restricting member in a rotation direction of the sleeve and at a distance from the sleeve, includes a first facing surface facing a position overlapping with a position with a maximum magnetic force of the one magnetic pole and has a magnetic pole having the same polarity as the one magnetic pole on the first facing surface. The nonmagnetic member is connected at an upstream side of the facing magnet in the rotation direction.
Public/Granted literature
- US20130243496A1 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME Public/Granted day:2013-09-19
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