Invention Grant
US08369755B2 Developing device and image forming apparatus using the developing device
失效
使用显影装置的显影装置和图像形成装置
- Patent Title: Developing device and image forming apparatus using the developing device
- Patent Title (中): 使用显影装置的显影装置和图像形成装置
-
Application No.: US12821382Application Date: 2010-06-23
-
Publication No.: US08369755B2Publication Date: 2013-02-05
- Inventor: Keiko Osaka , Yasuyuki Yamashita , Ryoichi Kitajima
- Applicant: Keiko Osaka , Yasuyuki Yamashita , Ryoichi Kitajima
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2009-151360 20090625
- Main IPC: G03G15/00
- IPC: G03G15/00
Abstract:
The developing device includes a developer charging member configured to charge a toner serving as a one developer; and a developer bearing member configured to bear and feed the charged toner while forming an electric field so that the toner hops. The developer bearing member includes an insulating substrate; plural electrodes arranged on the insulating substrate in a developer feeding direction to form the electric field; and an outermost layer covering the plural electrodes. The toner has a softening point of from 115 to 130° C.
Public/Granted literature
- US20100329748A1 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING THE DEVELOPING DEVICE Public/Granted day:2010-12-30
Information query
