Automatic sheet feed active alignment system

Details Automatic sheet feed active alignment system Automatic sheet feed active alignment system

B - Operations, Transporting

41

J

101/96.02

B41J 2/01 (2006.01) B65H 3/06 (2006.01) B65H 9/10 (2006.01)

Patent

CA 2014650

An automatic sheet feed alignment system is de- scribed for feeding sheets of print media such as paper to print mechanism in alignment with the print mechanism. A single motor drives a main sheet advance roller, and is also coupled to a sheet pick roller through a non-revers- ing clutch. An idler roller is disposed adjacent the drive roller. To feed a sheet into the print position, the motor drives the main drive roller and sheet pick roller in a sheet advancing direction, until the sheet leading edge is advanced into and past the nip between the main drive and idler rollers. The motor direction is then reversed so that the main roller retracts the sheet. Because the sheet pick roller is not driven in the reverse direction, a buckle is formed in the sheet between the sheet pick roller and the nip, tending to align the leading sheet edge with the nip. The motor direction is then reversed to drive the sheet forward to the print position, its leading edge having been aligned.

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