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APPARATUS FOR DECREASING THE OCCURRENCE OF PHOTORECEPTOR FILMING

IP.com Disclosure Number: IPCOM000023286D
Original Publication Date: 1977-Jun-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 260K

Publishing Venue

Xerox Disclosure Journal

Abstract

A major shortcoming of vacuum brush cleaners for removing toner from a photoreceptor surface is that such cleaners pro-duce, with time, filmed layers of toner and other matter on the photoreceptor surface- When the film is sufficiently thick and/or extensive, visible defects are produced on resulting copies- It is proposed to provide an apparatus for significantly extending the interval before filming occurs or for eliminating the filming of the photoreceptor surface,

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XEROX DISCLOSURE JOURNAL

APPARATUS FOR DECREASING THE OC~ Proposed Classification
CURRENCE OF PHOTORECEPTOR FILMING U~S~Cl~ 355/15
Stephen Strella mt. Cl. G03g 21/00

A major shortcoming of vacuum brush cleaners for removing
toner from a photoreceptor surface is that such cleaners pro~
duce, with time, filmed layers of toner and other matter on
the photoreceptor surface~ When the film is sufficiently
thick and/or extensive, visible defects are produced on
resulting copies~ It is proposed to provide an apparatus for
significantly extending the interval before filming occurs or
for eliminating the filming of the photoreceptor surface,

A silicone rubber roll is made to ride continuously or inter~
mittently on the photoreceptor surfaces The silicone rubber,
such as 20 durometer dimethyl silicone rubber is pre-swollen
or pre-~b1ended with a dimethyl silicone oils On contacting
the photoreceptor surface a layer of the oil will form there-~
on. A monolayer of the oil would be preferred. Running con-~
tact between the roll and the photoreceptor surface will
result in an equilibrium thickness of this oil layer,

The layer of silicone oil on the photoreceptor surface is of
much lower coefficient of friction than a typical selenium
alloy surface and, therefore, should lower the energies in-~
volved in brush cleaning and extend the time until filming
occurs or eliminate filming of the photoreceptor surface, The
silicone oil layer should also behave as an abhesive layer,
thereby preventing wetting a...