Sheet conveying device and image forming apparatus

Sheet feeding or delivering – Feeding – By means to convey sheet

Reexamination Certificate

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Details

C271S270000, C271S265010, C271S265020, C198S624000

Reexamination Certificate

active

07971878

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.

REFERENCES:
patent: 5076568 (1991-12-01), de Jong et al.
patent: 7547016 (2009-06-01), Mizuno
patent: 2007/0269230 (2007-11-01), Hoshino et al.
patent: 2008/0175612 (2008-07-01), Oikawa et al.
patent: 2008/0232880 (2008-09-01), Noguchi et al.
patent: 2008/0303202 (2008-12-01), Noguchi et al.
patent: 2009/0212491 (2009-08-01), Noguchi et al.
patent: 2006-085153 (2006-03-01), None

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