Combined differential deskewing and non-differential registratio

Details Combined differential deskewing and non-differential registratio Combined differential deskewing and non-differential registratio

1990-11-05

1992-01-07

Grimley, A. T.

Sheet feeding or delivering

Feeding

With means to align sheet

355317, B65H 702, G03G 2100

Patent

active

050783840

ABSTRACT:
A method and apparatus for deskewing and registering a copy sheet, including the use of two or more selectably controllable drive rolls operating in conjunction with sheet skew and lead edge sensors, for frictionally driving and deskewing sheets having variable lengths. Subsequently, said sheets will be advanced so as to reach a predefined registration position at a predetermined velocity and time, at which point said sheets will no longer be frictionally engaged by said drive rolls.

REFERENCES:
patent: 3156463 (1964-11-01), Masterson et al.
patent: 3593988 (1971-07-01), Collins
patent: 3861670 (1975-11-01), Kraft
patent: 4128327 (1978-12-01), Sugiyama et al.
patent: 4155440 (1979-05-01), Bogdarski et al.
patent: 4391510 (1983-07-01), Cherian
patent: 4438917 (1984-03-01), Janssen et al.
patent: 4472049 (1984-01-01), Houna et al.
patent: 4487407 (1984-12-01), Baldwin
patent: 4500086 (1985-02-01), Garavuso
patent: 4511242 (1985-04-01), Ashbee et al.
patent: 4971304 (1990-11-01), Lofthus

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