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ELECTRICAL CONTACT FOR PHOTORECEPTORS HAVING INSULATING SUBSTRATES

IP.com Disclosure Number: IPCOM000024503D
Original Publication Date: 1980-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 1 page(s) / 51K

Publishing Venue

Xerox Disclosure Journal

Abstract

Photoreceptors for use in electrophotographic copying devices are frequently formed on insulating substrates, and in such cases, establishing an electrical contact to the conductive layer beneath the photoconductive surface presents a practical problem. Such an electrical connection is required in order to establish ground potential, particularly when electrostatically charging the photosensitive layer, when developing it, and when transferring a developed image from it.

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XEROX DISCLOSURE JOURNAL

ELECTRICAL CONTACT FOR PHOTO- RECEPTORS HAVING INSULATING SUBSTRATES
Gedeminas J. Reinis

Proposed Classification
U.S. CI. 430/60 Int. C1. G03g 5/04

Paul C. Swanton

Photoreceptors for use in electrophotographic copying devices are frequently formed on insulating substrates, and in such cases, establishing an electrical contact to the conductive layer beneath the photoconductive surface presents a practical problem. Such an electrical connection is required in order to establish ground potential, particularly when electrostatically charging the photosensitive layer, when developing it, and when transferring a developed image from it.

This disclosure relates to a solution of this problem. It involves the application of a film of carbon-filled DuPont 49000 (a product of E. I. du Pont de Nemours & Co.) or Flexclad resin (a registered trademark of Goodyear Tire & Rubber Co.) to the edges of the conductive layer which extend beyond the limits of the photoconductive coating. Thus, an electrical contact strip of any convenient width is provided on the top surface of the photoreceptor. This strip may be reliably grounded electrically by means of a conductive wire brush or metallic roller. The resin layer is tough and will withstand long periods of mechanical abrasion without being dam aged.

Volume 5 Number 5 September/October 1980 575

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