Process, lateral and skew sheet positioning apparatus and method

Details Process, lateral and skew sheet positioning apparatus and method Process, lateral and skew sheet positioning apparatus and method

1997-01-21

2000-05-09

Ellis, Christopher P.

Sheet feeding or delivering

Feeding

With means to align sheet

271228, B65H 702

Patent

active

060592842

ABSTRACT:
An apparatus and method for registering and deskewing a sheet along a sheet path. A pair of drive spheres are located in the sheet path. When a sheet enters the nips formed by the spheres the sheet is driven until it is sensed by a sensor. The drive spheres are driven by a pair of wheels which allow the spheres to rotate about any axis through their center and parallel to the plane of the sheet. The spheres are driven such that the sheet is side registered and deskewed as it is moved along the sheet path. Constant feedback from the sensors to the drive controller allows the sheet to be registered in a very short distance and has the added benefit of self compensation for wear of the drive components. The wide registration and deskewing latitude of the device allows for the use of relatively inexpensive and low accuracy sheet drives preceding the device.

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