Title:
現像装置並びにこれを備える画像形成装置及びプロセスカートリッジ
Document Type and Number:
Japanese Patent JP5429587
Kind Code:
B2
Abstract:
A developing unit includable in a process cartridge and in an image forming apparatus includes a developer bearing member including a magnetic field generator and a nonmagnetic hollow member, a developer container, an agitation/conveyance member, and a developer regulating member. The magnetic field generator has first and second magnetic poles to generate respective magnetic forces for removing the developer from the developer bearing member after the developer passes the development region. A developer-releasing region releases the developer from the developer bearing member using a release force. The developer is disposed higher than a surface of the developer in the developer storing chamber. A component of a magnetic flux density of the magnetic field generated by the magnetic field generator in a direction normal to the developer-releasing region is directed to a same direction as the first and second magnetic poles across the developer-releasing region without forming a local maximum point.
Inventors:
Kyota Hizuka
Masayuki Osawa
▲高▼野 善之
Katsumi Masuda
Yoshio Hattori
Yuji Suzuki
Ozeki Takamasa
Hiroyuki Uenishi
Masayuki Osawa
▲高▼野 善之
Katsumi Masuda
Yoshio Hattori
Yuji Suzuki
Ozeki Takamasa
Hiroyuki Uenishi
Application Number:
JP2008095302A
Publication Date:
February 26, 2014
Filing Date:
April 01, 2008
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03G15/09; G03G9/10
Domestic Patent References:
| JP2007183533A | ||||
| JP2000221785A | ||||
| JP2003295602A | ||||
| JP2003188011A | ||||
| JP2005316503A | ||||
| JP2005266366A |
Attorney, Agent or Firm:
Toshi Kuroda