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RECIRCULATING DOCUMENT FEEDER

IP.com Disclosure Number: IPCOM000024186D
Original Publication Date: 1979-Dec-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 84K

Publishing Venue

Xerox Disclosure Journal

Abstract

A recirculating document feeder is provided for an electrostatographic copier. The copier may, for example, comprise conventional xerographic components such as xerographic imaging drum 10, development station 11, drum cleaning station 12, paper supply end 17, paper transport 13, image-fixing station 14, copy output roll 15 and output tray 16. A document may be transported across the viewing platen and passed a document viewing slot 21, which is illuminated by lamp 20. An image of the moving document is formed on the drum 10 with an optical system including mirrors 18 and lens 19.

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XEROX DISCLOSURE JOURNAL

RECIRCULATING DOCUMENT FEEDER Proposed Vaidevutis Draugelis Classification

US. C1. 271/10 Int. CI. B65h 5/00

A recirculating document feeder is provided for an electrostatographic copier. The copier may, for example, comprise conventional xerographic components such as
xerographic imaging drum 10, development station 11, drum cleaning station 12, paper supply end 17, paper transport 13, image-fixing station 14, copy output roll 15 and output tray 16. A document may be transported across the viewing platen and passed a document viewing slot 21, which is illuminated by lamp 20. An image of the moving document is formed on the drum 10 with an optical system including mirrors 18 and lens 19.

In operation, a stack of documents placed face down in a document tray 25 are separated and advanced in a forward direction by bottom feed roll 26 and top retard member 27. Flexible guide member 28 insures that each sheet is driven into the nip between input drive rolls 29 and 31. As the trailing edge of the document reaches the edge of the platen, it is sensed and the direction of the output drive

Volume 4 Number 6 November/December 1979 743

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RECIRCULATING DOCUMENT FEEDER (Con t'd)

roll 30 is reversed preferably at a speed greater than the input speed to return the document to the top of the stack of documents as quickly as possible. The return of the document is enhanced by flexible guid...