Sheet conveying device, and image forming apparatus...

Details Sheet conveying device, and image forming apparatus... Sheet conveying device, and image forming apparatus...

2011-01-18

2011-01-18

Joerger, Kaitlin S (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C271S265020, C271S270000

Reexamination Certificate

active

07871073

ABSTRACT:
A sheet conveying device, that can be included in an image forming apparatus, includes a drive source, a drive roller driven by the drive source, a driven roller to press against the drive roller and rotate with the drive roller, an angular velocity detector to detect an angular velocity of the drive roller, a timing estimation unit to estimate a timing when a sheet-type recording medium enters between the drive roller and the driven roller, and a controller to control the drive source based on detection results obtained by the angular velocity detector. The controller includes a feedback control unit to perform feedback control based on data obtained by the angular velocity detector, and a feed-forward control unit to perform feed-forward control based on data obtained by the timing estimation unit.

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