Invention Grant
US08175479B2 Transfer device and image forming apparatus having first and second transfer nips and first and second contacting members which apply transfer biases
有权
具有第一和第二传送夹头的传送装置和图像形成装置以及施加传送偏压的第一和第二接触构件
- Patent Title: Transfer device and image forming apparatus having first and second transfer nips and first and second contacting members which apply transfer biases
- Patent Title (中): 具有第一和第二传送夹头的传送装置和图像形成装置以及施加传送偏压的第一和第二接触构件
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Application No.: US13041034Application Date: 2011-03-04
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Publication No.: US08175479B2Publication Date: 2012-05-08
- Inventor: Kazuchika Saeki , Toshitaka Yamaguchi , Masaharu Furuya , Takahiro Nakayama , Takuya Sekine
- Applicant: Kazuchika Saeki , Toshitaka Yamaguchi , Masaharu Furuya , Takahiro Nakayama , Takuya Sekine
- 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: JP2006-314203 20061121
- Main IPC: G03G15/16
- IPC: G03G15/16 ; G03G15/01
Abstract:
An image forming apparatus includes an intermediate transfer belt, a photosensitive belt, a primary transfer roller, a secondary-transfer opposing roller, and a secondary transfer roller. The photosensitive belt comes into contact with a surface of the intermediate transfer belt to form a primary transfer nip. The secondary-transfer opposing roller comes into contact with the surface of the intermediate transfer belt to form a secondary transfer nip. The closest distance between a surface of the photosensitive belt and that of the primary transfer roller is greater than the thickness of the intermediate transfer belt. A toner image on the intermediate transfer belt is transferred onto a recording sheet at the secondary transfer nip while a transfer bias is applied to the secondary transfer roller.
Public/Granted literature
- US20110150540A1 TRANSFER DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2011-06-23
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