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Document Turnover Mechanism Utilizing Vacuum Roll Drive

IP.com Disclosure Number: IPCOM000080277D
Original Publication Date: 1973-Nov-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Rogers, JC: AUTHOR

Abstract

Figs. 1, 2 and 3 show progressive stages of operation of document feeding and reversing apparatus, such that a document may be reoriented prior to being fed to a collator.

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Document Turnover Mechanism Utilizing Vacuum Roll Drive

Figs. 1, 2 and 3 show progressive stages of operation of document feeding and reversing apparatus, such that a document may be reoriented prior to being fed to a collator.

Output document 10 from a duplex operation of a photocopier or other printing apparatus must be reversed, such that the trailing edge becomes the leading edge to properly orient the document for collation. Document 10 is fed from the copying or output device onto a stop member 12 on the periphery of vacuum drum 14. The vacuum is controlled such that the document is grasped by the vacuum force pulling it onto the periphery of

With the Vacuum holding document 10 onto the periphery of drum 14, the drum is rotated about its axis to engage pinch roll 16 in pinching relationship with output feed belt 18. By engaging roll 16 and output feed belt 18, the document 10 is trapped therebetween. Since belt 18 is continuously driven by drive and idler pulleys 20, 22, the document is fed in a direction opposite that in which it is being carried by the rotation of drum 14.

By engaging the document between roll 16 and belt 18, the document is fed in an output direction as indicated by arrow 24 in Fig. 3, thus returning the document in reversed orientation to the sheet transport for further conveyance to the collator mechanism.

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