Invention Grant
- Patent Title: Electrophotographic image forming apparatus
- Patent Title (中): 电子照相成像设备
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Application No.: US12391703Application Date: 2009-02-24
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Publication No.: US08086148B2Publication Date: 2011-12-27
- Inventor: Kaoru Kataoka , Akio Tsujita , Katsuhiko Suzuki
- Applicant: Kaoru Kataoka , Akio Tsujita , Katsuhiko Suzuki
- 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: JP2008-044139 20080226
- Main IPC: G03G15/08
- IPC: G03G15/08

Abstract:
An electrophotographic image forming apparatus is disclosed. The electrophotographic image forming apparatus includes a photoconductor body, a donor roller which develops an electrostatic latent image on the surface of the photoconductor body by using charged toners, and a development nip section formed between the photoconductor body and the donor roller by having a predetermined gap between the photoconductor body and the donor roller. A developing traveling-wave electrode for generating a traveling-wave electric field is disposed at a position facing the surface of the donor roller at an upstream side of the moving direction of the photoconductor body relative to the development nip section, and a removing traveling-wave electrode for generating a traveling-wave electric field is disposed at a position facing the surface of the donor roller at a downstream side of the moving direction of the photoconductor body relative to the development nip section.
Public/Granted literature
- US20090214270A1 ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS Public/Granted day:2009-08-27
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