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Browse Prior Art Database

MULTIPLE COPIES BY THE USE OF CONDUCTIVE BRUSH TRANSFER

IP.com Disclosure Number: IPCOM000024725D
Original Publication Date: 1981-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to a method for transferring a developed image in an electrostatographic copying machine in a manner so that the latent image is not disturbed during the transfer process and can then be redeveloped and transferred several times.

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MULTIPLE COPIES BY THE USE OF CONDUCTIVE BRUSH TRANSFER Richard F. Bergen

Proposed Classification
U.S. CI. 430/48 Int. C1. G03g 13/04

This invention relates to a method for transferring a developed image in an electrostatographic copying machine in a manner so that the latent image is not disturbed during the transfer process and can then be redeveloped and transferred several times.

Conventionally, the transfer of a developed image on the photoreceptor in an electrostatographic copying process involves the use of a transfer corotron under relatively high applied voltage. Such transferred corotrons produce image charge distortions or destructions due to air breakdown at the point of separation. The present invention provides that a conductive brush, essentially similar to the conductive metallic fiber brush disclosed for charging purposes in the Xerox Disclosure Journal, Volume 6, page 211, dated July/August 1981, be used for transfer of the developed image. The brush is made of extremely fine metallic fibers having a diameter in the order of about 4-12 microns, with about 12,000 fibers to several hundred thousand fibers per square inch. The fibers are woven into a cloth base having conductive layers thereon for electrical contact to all of the fibers. Such a conductive brush, when used in the transfer process of the present invention, should be biased to a voltage less than the breakdown voltage and be in contact with the base of the carrier sheet, such as paper...