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TORSION SPRING NUDGER SHEET DRIVE

IP.com Disclosure Number: IPCOM000025047D
Original Publication Date: 1983-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 53K

Publishing Venue

Xerox Disclosure Journal

Abstract

A nudger drive system for sheets, particularly for intermittently urging an original document into registration against one or two orthogonal registration edges on a copier platen, with controlled normal force and slippage and without damaging the document. As shown in the drawing, the document driving is imparted solely by elastomer tips 1 molded onto the cantilevered ends of elongate torsion springs 2 (wires or strips). The elastomer tips may be in the form of frictional pads. The inner ends of the torsion springs 2 are mounted to and rotated by a hub 3. An adjustment is provided for the spring 2 tension at this spring/hub connection. As the hub 3 is rotatably driven the elastomer tips 1 are dragged across the document in the desired driving direction with a normal force controlled by the torsion springs. The metal springs 2 maintain the normal force constant with time regardless of aging or wear of the elastomer, as compared to an all elastomer wheel.

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(EROX DISCLOSURE JOURNAL

TORSION SPRING NUDGER SHEET DRIVE John A. Roman
Russell L. Phelps
Jeffrey L. Sisson
Raymond E. Poehlein

Proposed Classification 1J.S. C1. 271/245
Int. Cl. B65h 9/04

A nudger drive system for sheets, particularly for intermittently urging an original document into registration against one or two orthogonal registration edges on a copier platen, with controlled normal force and slippage and without damaging the document. As shown in the drawing, the document driving is imparted solely by elastomer tips 1 molded onto the cantilevered ends of elongate torsion springs 2 (wires or strips). The elastomer tips may be in the form of frictional pads. The inner ends of the torsion springs 2 are mounted to and rotated by a hub 3. An adjustment is provided for the spring 2 tension at this spring/hub connection. As the hub 3 is rotatably driven the elastomer tips 1 are dragged across the document in the desired driving direction with a normal force controlled by the torsion springs. The metal springs 2 maintain the normal force constant with time regardless of aging or wear of the elastomer, as compared to an all elastomer wheel.

Volume 8 Number 3 May/June 1983 219

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220

 XEROX DISCLOSURE JOURNAL Volume 8 Number 3 May/June 1983

[This page contains 1 picture or other non-text object]