Vacuum platen transport plenum vacuum shutter

Details Vacuum platen transport plenum vacuum shutter Vacuum platen transport plenum vacuum shutter

1990-03-02

1991-08-06

Bollinger, David H.

Sheet feeding or delivering

Delivering to stack and feeding therefrom

With sheet sensor for selective location

271 6, 271 7, 271 10, 271276, 271197, 271 96, B65H 522

Patent

active

050370790

ABSTRACT:
A mechanism for shuttering of vacuum ports of a vacuum platen transport (VPT) plenum in correspondence with the size of the documents being transported from the document tray of a recirculating document handler. The shuttering mechanism is coupled to a movable side guide of the document tray and includes a flexible coiled tape mounted with respect to the vacuum plenum of the VPT and movable side guide of the document tray such that movement of the side causes the tape to seal off vacuum slots within the plenum that are not located beneath documents.

REFERENCES:
patent: 4168829 (1979-09-01), Wilson et al.
patent: 4592542 (1986-06-01), Selak
patent: 4819928 (1989-04-01), Osborn et al.

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