Browse Prior Art Database

DOUBLE VACUUM PULSE RECIRCULATING DOCUMENT HANDLER RESTACKING

IP.com Disclosure Number: IPCOM000027163D
Original Publication Date: 1995-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 87K

Publishing Venue

Xerox Disclosure Journal

Abstract

In "race track" recirculating document handlers, one constraint is the efficient handling of minimum sets of documents, preferably as few as two documents. This means that a two sheet set should be able to be handled such that in the time for each sheet to be scanned plus the following rescan, the other (just ejected) document should be able to:

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XEROX DISCLOSURE JOURNAL

DOUBLE VACUUM PULSE Proposed Classification RECIRCULATING DOCUMENT U.S. C1.271/098 HANDLER RESTACKING
C1. Int. Morton Silverberg B65h 1/06

In "race track" recirculating document handlers, one constraint is the efficient handling of minimum sets of documents, preferably as few as two documents. This means that a two sheet set should be able to be handled such that in the time for each sheet to be scanned plus the following rescan, the other (just ejected) document should be able to:

0 Reach the feeder tray

0 Settle into the feeder tray

0 Be acquired for feeding

0 Be fed out of the tray, and

0 Be transported back to the registration edge

Current recirculating document handlers of the Vacuum Corrugation Feeder (VCF) type allow time for the documents reaching the document feed tray to settle onto the other documents in the tray. They then apply a vacuum level for the worst case time established for document acquisition and separation before initiating feeding. This approach does not recognize the special situations involved in settling, acquiring, separating and then feeding when there is no other document in the tray.

The settling of a document into such a tray can be greatly sped up by applying vacuum to the VCF feeder so as to 'snatch' the document out of the air after its lead edge has reached the document handler's registration wall. This is not possible (nor necessary) when other documents are in the tray. However, such an acquired docu...