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SHEET SKEW CORRECTION AND REGISTRATION SYSTEM

IP.com Disclosure Number: IPCOM000024469D
Original Publication Date: 1980-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 94K

Publishing Venue

Xerox Disclosure Journal

Abstract

The sheet lead edge de-skewing system illustrated here may be utilized in various applications for de-skewing, or de-skewing and registering, either original docu-ments or copy sheets. The illustrated application is for the de-skewing of original documents as they are initially fed from the stack feeder (not shown) in a recirculating document handling system. This illustrated system provides de-skewing of the documents while they are moving and is an integral part of the first inverter roll 1 which inverts the documents before they are placed on the copier platen. A pair of skew correction fingers 2 are pivotally mounted on axes 3 inside the roller 1, spaced transversely of the document path. The fingers 2 rotate with, but automatically extend and retract from, the surface of the roller 1. The pivotal

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XEROX DISCLOSURE JOURNAL

SHEET SKEW CORRECTION AND REGISTRATION SYSTEM
James E. McCrea

Proposed Classification
U.S. C1. 271/226 Int. CI. B65h 9/00

The sheet lead edge de-skewing system illustrated here may be utilized in various applications for de-skewing, or de-skewing and registering, either original docu- ments or copy sheets. The illustrated application is for the de-skewing of original documents as they are initially fed from the stack feeder (not shown) in a recirculating document handling system. This illustrated system provides de- skewing of the documents while they are moving and is an integral part of the first inverter roll 1 which inverts the documents before they are placed on the copier platen. A pair of skew correction fingers 2 are pivotally mounted on axes 3 inside the roller 1, spaced transversely of the document path. The fingers 2 rotate with, but automatically extend and retract from, the surface of the roller 1. The pivotal

Volume 5 Number 5 September/October 1980 497

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SHEET SKEW CORRECTION AND REGISTRATION SYSTEM (Cont'd)

mounting 3 of the fingers 2 is to a web 4 (transparent here for clarity) integral the roller 1. Spaced from the axis 3 is a cam follower 5 on the fingers 2 which is biased to roll over the variable radius of a stationary cam 6 on the central shaft 7. This automatically extends the tips 2a of the fingers 2 from the surface of the roller 1 as the lead edg...