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LOW SURFACE ENERGY SHEET FEED ROLLER

IP.com Disclosure Number: IPCOM000024390D
Original Publication Date: 1980-Jun-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 46K

Publishing Venue

Xerox Disclosure Journal

Abstract

Generally, the document roller in an electrophotographic printing machine is made from a rubber wheel. However, it has been found that as the rubber wheel drives the document across the platen in the exposure mode of operation, the abrasive characteristics of the paper produce abrasions thereon. This is due to the high friction between the paper and the glass. In order to reduce the friction, the platen may be made from a porous substrate such as gradient index glass having a low coefficient of friction material filling the pores the'reof, such as a Teflon family material. The material lowers the surface energy of the glass. This significantly reduces the friction between the platen and the document. In this way, abrasions are minimized and the required sheet-feeding force is significantly lower.

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XEROX DISCLOSURE JOURNAL

Proposed Classification

Int. C1. G03g 13/00

Generally, the document roller in an electrophotographic printing machine is made from a rubber wheel. However, it has been found that as the rubber wheel drives the document across the platen in the exposure mode of operation, the abrasive characteristics of the paper produce abrasions thereon. This is due to the high friction between the paper and the glass. In order to reduce the friction, the platen may be made from a porous substrate such as gradient index glass having a low coefficient of friction material filling the pores the'reof, such as a Teflon family material. The material lowers the surface energy of the glass. This significantly reduces the friction between the platen and the document. In this way, abrasions are minimized and the required sheet-feeding force is significantly lower.

Volume 5 Number 3 May/June 1980 323

LOW SURFACE ENERGY SHEET FEED ROLLER U.S. C1. 430/31 James R. Law

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 XEROX DISCLOSURE JOURNAL Volume 5 Number 3 May/June 1980

324

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