Invention Grant
- Patent Title: Developing device, process cartridge, and image forming apparatus
- Patent Title (中): 显影装置，处理盒和成像装置
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Application No.: US12031141Application Date: 2008-02-14
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Publication No.: US07792465B2Publication Date: 2010-09-07
- Inventor: Tatsuya Kubo , Yoshitaka Fujinuma , Susumu Tateyama , Masayoshi Nakayama
- Applicant: Tatsuya Kubo , Yoshitaka Fujinuma , Susumu Tateyama , Masayoshi Nakayama
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-038888 20070220; JP2007-090168 20070330
- Main IPC: G03G15/08
- IPC: G03G15/08
Abstract:
A disclosed developing device is for accommodating a developer including carriers and a toner, and for developing a latent image formed on an image carrier. The developing device includes plural developer conveying units configured to convey the developer accommodated in the developing device and form circulating paths; and a ventilation unit configured to perform ventilation between at least one of the developer conveying units whose internal pressure increases and at least one of the developer conveying units whose internal pressure decreases.
Public/Granted literature
- US20080199205A1 DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS Public/Granted day:2008-08-21
Information query
