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ARTICLE AND METHODS OF PHOTORECEPTOR REPAIR

IP.com Disclosure Number: IPCOM000022839D
Original Publication Date: 1976-Mar-31
Included in the Prior Art Database: 2004-Mar-26
Document File: 2 page(s) / 263K

Publishing Venue

Xerox Disclosure Journal

Abstract

The present concept relates to the repair of e1ectro~~ statographic photoreceptors whose photoconductive surfaces have been scratched, The photoreceptor repair composition consists of an organic resin dissolved in a suitable solvent said solution containing a second phase which is polarizable in an electric field. The composition is formulated such that the apparent dielectric constant of the dried composition is such that the machine corotron charging current will only charge the material to a potential equal to the photoconductor background potential.

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XEROX DISCLOSURE JOURNAL

ARTICLE AND ME~!ODS OF Proposed Classification
PHO~IORECEPTORREPAIR U.S. Cl. 96/1.5
Robert N. Jones mt. Cl. G03g 5/04
Harry 3, Green
Richard L. Post
R. Michael Ferguson

The present concept relates to the repair of e1ectro~~
statographic photoreceptors whose photoconductive
surfaces have been scratched, The photoreceptor repair
composition consists of an organic resin dissolved in a
suitable solvent said solution containing a second phase
which is polarizable in an electric field. The composition
is formulated such that the apparent dielectric constant
of the dried composition is such that the machine corotron
charging current will only charge the material to a
potential equal to the photoconductor background potential.

In one example, 10 parts by volume of oxidized copper
powder is dispersed in 90 percent by volume of a poly~
urethane resin dissolved in toluene, This material is
applied to scratches in an electrostatographic photo-'
receptor having a layer of selenium on its surface and
dried, The repaired photoreceptor is cycled in the normal
xerographic mode. With underexposure, the outline of the
scratch is visible on the resulting copy indicating that
the repaired scratch is at a lower potential than the
selenium, With overexposure, the repaired area positively
images indicating a higher potential than selenium. However,
with close to optimum exposure, i.e. background approximately
+200V, the repaired area is virtually indiscernible in
the background areas of t...