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COMPOSITE CORE FOR CONDUCTIVE BRUSHES

IP.com Disclosure Number: IPCOM000025435D
Original Publication Date: 1985-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 71K

Publishing Venue

Xerox Disclosure Journal

Abstract

Conductive brushes are capable of use for various cleaning and charging applications in automatic reproducing machines. Common practice in making such brushes is to incorporate brush windings and core fabrication operations into one continuous process. The figure illustrates the continuous core fabrication brush manufacturing process typical of this approach and begins with multiple strips of thin paper or phenolic impregnated paper being fed continuously onto a cylindrical, metal mandrel. A suitable adhesive, usually an epoxy, is applied between various layers which form the core element of the brush. Downstream of

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XEROX DISCLOSURE JOURNAL

COMPOSITE CORE FOR CONDUCTIVE BRUSHES U.S. CL. 355/3CH
Joseph A. Swift

Proposed Classification

Int. CI. G03g 15/00

Conductive brushes are capable of use for various cleaning and charging applications in automatic reproducing machines. Common practice in making such brushes is to incorporate brush windings and core fabrication operations into one continuous process. The figure illustrates the continuous core fabrication brush manufacturing process typical of this approach and begins with multiple strips of thin paper or phenolic impregnated paper being fed continuously onto a cylindrical, metal mandrel. A suitable adhesive, usually an epoxy, is applied between various layers which form the core element of the brush. Downstream of

Volume 10 Number 3 May/June 1985 137

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

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COMPOSITE CORE FOR CONDUCTIVE BRUSHES (Cont'd)

the core winding a second layer of adhesive is applied to the outer circumference of the core and a continuous strip of pile fabric is wound over it, completing the brush winding process. Previously in making electroconductive brushes, it has been necessary to use costly metal cores. It is hereby proposed to use the above described process for making electroconductive brushes while avoiding the use of full metallic cores by allowing the outer wrapping layer of the core element to be conductive. For example, thin aluminum or brass foil or shim stock, or aluminized p...