Sheet feeding or delivering – Feeding – With means to align sheet
Patent
1985-10-17
1986-10-21
Schacher, Richard A.
Sheet feeding or delivering
Feeding
With means to align sheet
271197, 271276, 355 14SH, B65H 906, B65H 2924
Patent
active
046181385
ABSTRACT:
In a document feeder for transporting document sheets over the platen of a copier, with a vacuum belt platen transport system, into registration means for stopping the document sheet at an imaging position on the platen, wherein the vacuum belt platen transport system comprises plural belts moving under a white vacuum plenum backing surface overlying the platen, and includes a vacuum source for applying a partial vacuum to a document sheet being transported by the moving belts, the improvement wherein: the vacuum belt platen transport system belts are transparent or highly translucent thin, low-frictional, non-elastomeric, plastic belts; the transparent or highly translucent belts being unapertured and the vacuum plenum backing surface being unapertured in the imaging position, so that the vacuum belt transport system is effectively invisible through a document sheet to the copier. Additionally disclosed is a system for automatically reducing the level of the partial vacuum in the vacuum plenum for the transporting of a document sheet of greater than a predetermined size into the registration means, to avoid damage to the document sheet by the registration means, in response to means for prior detection of a document sheet of greater than a predetermined size.
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"Document Handling System", by Arthur C. Martellocl, Xerox Disclosure Journal, vol. 6, No. 5, p. 231.
Schacher Richard A,.
Xerox Corporation
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