Invention Grant
US08923726B2 Image forming apparatus incorporating developing device with first and second seals
有权
图像形成装置包括具有第一和第二密封件的显影装置
- Patent Title: Image forming apparatus incorporating developing device with first and second seals
- Patent Title (中): 图像形成装置包括具有第一和第二密封件的显影装置
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Application No.: US13430004Application Date: 2012-03-26
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Publication No.: US08923726B2Publication Date: 2014-12-30
- Inventor: Kiyonori Tsuda , Hideo Yoshizawa , Kohichi Utsunomiya , Takuzi Yoneda , Yutaka Takahashi , Emi Kita , Yuki Oshikawa
- Applicant: Kiyonori Tsuda , Hideo Yoshizawa , Kohichi Utsunomiya , Takuzi Yoneda , Yutaka Takahashi , Emi Kita , Yuki Oshikawa
- 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: JP2011-094720 20110421; JP2011-161981 20110725
- Main IPC: G03G15/08
- IPC: G03G15/08
Abstract:
A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening formed in the development casing, a magnetic field generator, a developer regulator disposed facing the developer bearer, a first seal member to cover a clearance between the latent image bearer and a rim of the development casing upstream from the opening, and a second seal member. The first seal member includes a first end portion fixed to the rim of the development casing and a second end portion in contact with the latent image bearer, and the second seal member includes a first end portion fixed to an inner face of the development casing farther from the latent image bearer than the first seal member, and a second end portion hanging to contact the developer carried on the developer bearer downstream from the developer regulator.
Public/Granted literature
- US20120269544A1 DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS INCORPORATING SAME Public/Granted day:2012-10-25
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