Lateral sheet pre-registration device

Details Lateral sheet pre-registration device Lateral sheet pre-registration device

1996-06-26

1997-12-16

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

With means to align sheet

271251, B65H 702

Patent

active

056976097

ABSTRACT:
A registering device for an electrophotographic printing machine. A steerable pair of drive nips is located in the paper path. A lead edge sensor detects when a sheet is within the steerable drive nips. The steerable nips are turned so that the sheet is transported toward a side registration sensor located in the paper path. When the side registration sensor detects the edge of the sheet the actuator causes the steerable nips to be straightened. The sheet may be forwarded to a second, higher accuracy registration device for final registration. The steerable nip device provides a course preregistration device which may utilize inexpensive and non complex components. This device also enables the use of less expensive components in the fine registration device as the range of correction required by the fine registration device can be much narrower due to the preregistration device.

REFERENCES:
patent: 4685664 (1987-08-01), Petersdorf
patent: 4836119 (1989-06-01), Siraco et al.
patent: 5219159 (1993-06-01), Malachowski et al.

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