Invention Grant
US08768200B2 Transfer unit and image forming apparatus employing the transfer unit
有权
转印单元和使用转印单元的图像形成装置
- Patent Title: Transfer unit and image forming apparatus employing the transfer unit
- Patent Title (中): 转印单元和使用转印单元的图像形成装置
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Application No.: US12499332Application Date: 2009-07-08
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Publication No.: US08768200B2Publication Date: 2014-07-01
- Inventor: Masaharu Furuya , Katsuhito Haruno , Takuya Sekine , Ryoh Tanoue , Masakazu Imai
- Applicant: Masaharu Furuya , Katsuhito Haruno , Takuya Sekine , Ryoh Tanoue , Masakazu Imai
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-178278 20080708; JP2008-187063 20080718
- Main IPC: G03G15/16
- IPC: G03G15/16 ; G03G15/08
Abstract:
A transfer unit includes a belt member, a bending roller, a transfer section, and a bias application unit. The belt member is extended between rollers and has a movable surface on which a toner image is transferred from an image carrier. The bending roller externally contacts the surface of the belt member to bend the belt member and rotates in conjunction with the belt member. The transfer section includes one of the rollers and a surface moving member. The surface moving member rotates at least one full turn while cleaning is performed on the surface moving member and the bending roller. A surface moving speed of the bending roller is equal to or greater than a surface moving speed of the surface moving member. A circumferential length L1 of the surface moving member and a circumferential length L2 of the bending roller satisfy L1≧L2.
Public/Granted literature
- US20100008696A1 TRANSFER UNIT AND IMAGE FORMING APPARATUS EMPLOYING THE TRANSFER UNIT Public/Granted day:2010-01-14
Information query
