Browse Prior Art Database

DOCUMENT HANDLING SYSTEM USING STIFF BELTS

IP.com Disclosure Number: IPCOM000024694D
Original Publication Date: 1981-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 49K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to belts suitable for use in document handling devices in copying machines. Heretofore, the normal force needed to generate the necessary frictional forces in such document handling belts is developed through controlled belt sag caused by the weight of the belt. However, the prior art belt materials are subject to tensile stress relaxation, which necessitates the periodic adjustment of the tension on the belt to control the frictional driving force generated by the belt.

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XEROX DISCLOSURE JOURNAL

DOCUMENT HANDLING SYSTEM USING STIFF BELTS
Arthur C. Martellock

Proposed Classification
U.S. C1. 271/8 Int. Cl. B65h 7/00

This invention relates to belts suitable for use in document handling devices in copying machines. Heretofore, the normal force needed to generate the necessary frictional forces in such document handling belts is developed through controlled belt sag caused by the weight of the belt. However, the prior art belt materials are subject to tensile stress relaxation, which necessitates the periodic adjustment of the tension on the belt to control the frictional driving force generated by the belt.

In accordance with the present invention, a stable material, such as biaxially oriented polyester films, is used to make the document handling belt. The normal force required to develop the frictional driving force on the document is developed by the stiffness in the belt. The coefficient of friction for such a belt may be controlled by coating one side of the belt with a material having suitable frictional properties, such as a urethane.

Volume 6 Number 5 September/October 1981 23 1

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    XEROX DISCLOSURE JOURNAL Volume 6 Number 5 September/October 1981

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