Browse Prior Art Database

ROLL CLEANER FLUID AND METHOD

IP.com Disclosure Number: IPCOM000023614D
Original Publication Date: 1978-Jun-30
Included in the Prior Art Database: 2004-Mar-31
Document File: 4 page(s) / 744K

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure relates to a contact fusing system for af-fixing electroscopic toner material to a support member. In order to affix or fuse electroscopic toner material perman-ently onto a support member, one conventional approach embraces thermal fusing of the electroscopic toner images onto a support by passing the support with the toner images thereon between a pair of opposed roller members, at least one of which is internally heated and is designated the fuser roll. The opposing roll member is generally designated as a backup or pressure roll. Such fuser systems are well known in the prior art and are disclosed in U.S. Patent 3,937,637, U.S. Patent 4,000,957, U.S. Patent 4,029,827 and U.S. Patent 4,050,803.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

ROLL CLEANER FLUID AND METHOD Proposed Classification
Rabin Moser U.S. Cl. 148/6
Donald A. Seanor mt. Cl. C23f 7/00

This disclosure relates to a contact fusing system for af-
fixing electroscopic toner material to a support member. In
order to affix or fuse electroscopic toner material perman-
ently onto a support member, one conventional approach
embraces thermal fusing of the electroscopic toner images onto
a support by passing the support with the toner images thereon
between a pair of opposed roller members, at least one of
which is internally heated and is designated the fuser roll.
The opposing roll member is generally designated as a backup
or pressure roll. Such fuser systems are well known in the
prior art and are disclosed in U.S. Patent 3,937,637, U.S.
Patent 4,000,957, U.S. Patent 4,029,827 and U.S. Patent
4,050,803.

The backup member generally cooperates with the fuser roll
structure to form a nip through which a copy paper or sub-
strate passes such that toner images thereon contact the fuser
roll structure. The backup member may comprise any suitable
construction, for example, a steel cylinder on a rigid steel
core having an elastomeric layer thereon. The dimensions may
be determined by one skilled in the art and generally are
dictated by the requirements of the particular copying
apparatus in which the fuser assembly is employed, the
dimensions being dependent upon the process speed and other
parameters of the machine. Means may also be provided for
applying a loading force in a conventional manner to the fuser
assembly to create nip pressures on the order of about 15 to
about 150 psi average.

One preferred type of backup or pressure roll is one which is
coated with a thin layer of a fluoroelastomer based upon the
copolymer of vinylidene fluoride and hexafluoropropylene, for
example, Viton, a tr.ademark of E. I. duPont Company, or
fluorinated ethylene-propylene resin (PEP resin).

Volume 3 Number 3 May/June 1978 161

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Page 2 of 4

ROLL CLEANER FLUID AND METHOD (Contvd)

in prior art embodiments, the pressure roll becomes contami~
nated with electroscopic toner material, lint, dust and other
foreign matter, and it must be continuously or intermittently
cleaned. In U.S. Patent 4,050,803, the pressure member is
cleaned with a felt pad attached by means of a support to the
fuser assembly frame so that the pad contacts the surface of
the pressure or backup member, Thus, any contamination such
as toner is removed from the backup or pressure member during
operation. ~ccordingly, when the backup member is a roll, the
contamination is removed during the rotation of the roll. One
of the preferred embodiments for removing the contamination
comprises the application of a layer of silicone oil to the
backup member.

In accordance with the present disclosure, a functional poly-
siloxane fluid is mixed with silicone oil and applied to the
pressure roll to assist in the removal of the contamination.
In...