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Browse Prior Art Database

USE OF ELECTRET FILMS FOR REMOVING PARTICLES FROM AMAT WEBS

IP.com Disclosure Number: IPCOM000026129D
Original Publication Date: 1990-Jun-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 137K

Publishing Venue

Xerox Disclosure Journal

Abstract

Multilayered photoreceptors containing a charge generator layer and a charge transport layer are coated on long (e.g. thousands of feet), thin (e.g. 3 mil) polyethylene terephthalate (PET) webs. These webs carry metalized (e.g. titanium) conductive ground plane coating (e.g. 200 angstroms). During the fabrication process the web attracts contaminants which include very small particles and fibers having a size on the order of 110 to 200 micrometers. These particles and fibers result in defects in the final multilayered coated device. Such defects are resist spots or agglomerate spots in the coated films which print out in the final copy. Many of the defect causing materials have been identified as ubiquitous "dirt" present in most environments, e.g., skin flakes, clothing and cleaning rag fibers, paper fibers.

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XEROX DISCLOSURE JOURNAL

USE OF ELECTRET FILMS FOR REMOVING PARTICLES FROM US. C1.430/127
AMAT WEBS
Susan Robinette

Proposed Classification

Int. C1. G03g 5/00

XEROX DISCLOSURE JOURNAL - Vol. 15, No. 3 May/June 1990 181

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USE OF ELECTRET FILMS FOR REMOVING PARTICLES FROM AMAT WEBS(Cont'd)

Multilayered photoreceptors containing a charge generator layer and a charge transport layer are coated on long (e.g. thousands of feet), thin (e.g. 3 mil) polyethylene terephthalate (PET) webs. These webs carry metalized (e.g. titanium) conductive ground plane coating (e.g. 200 angstroms). During the fabrication process the web attracts contaminants which include very small particles and fibers having a size on the order of 110 to 200 micrometers. These particles and fibers result in defects in the final multilayered coated device. Such defects are resist spots or agglomerate spots in the coated films which print out in the final copy. Many of the defect causing materials have been identified as ubiquitous "dirt" present in most environments, e.g., skin flakes, clothing and cleaning rag fibers, paper fibers.

Electret films are polymer films in such as Teflon, which are processed so as to produce a permanent dipole, i.e., one side of the film is positive and one side is negative. One application of such films is to trap airborne particles.

It is now proposed that one use electret films in the photoreceptor fabrication environment to remove particles from plastic substrate surfaces during pre- coat ste...