Invention Grant
- Patent Title: Sheet conveying device and image forming apparatus
- Patent Title (中): 片材输送装置和成像装置
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Application No.: US12320868Application Date: 2009-02-06
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Publication No.: US07971878B2Publication Date: 2011-07-05
- Inventor: Takashi Hashimoto , Toshiyuki Andoh , Takashi Hodoshima , Seiji Hoshino , Hidetaka Noguchi , Tatsuhiko Oikawa
- Applicant: Takashi Hashimoto , Toshiyuki Andoh , Takashi Hodoshima , Seiji Hoshino , Hidetaka Noguchi , Tatsuhiko Oikawa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, PLC
- Priority: JP2008-045935 20080227
- Main IPC: B65H5/02
- IPC: B65H5/02 ; B65H5/04

Abstract:
A sheet conveying device includes a torque estimation unit that, based upon a first load torque generated at a time that a sheet-like member passes through a first nip between a first driving roller and a first driven roller of an upstream sheet conveying unit, estimates a second load torque generated at a time that the sheet-like member passes through a second nip between a second driving roller and a second driven roller of a downstream sheet conveying unit; and a control unit that controls the driving torque such that the second load torque is counterbalanced by applying a counterbalancing torque in synchronization with a timing of entry of the sheet-like member into the second nip.
Public/Granted literature
- US20090212488A1 Sheet conveying device and image forming apparatus Public/Granted day:2009-08-27
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