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Browse Prior Art Database

MANUFACTURE OF SLEEVED FUSER ROLL

IP.com Disclosure Number: IPCOM000024243D
Original Publication Date: 1980-Feb-29
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 89K

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure relates to a fuser roll or a pressure roll for a fusing apparatus utilized in fixing toner images to support sheets wherein the roll comprises a rigid core and an outer layer over the rigid core, the outer layer comprising a copolymer of perf luoroalkyl perf luorovinyl ether with tetraf luoroethylene. The outer copolymer layer is placed over the core in the form of a heat-shrinkable sleeve comprising the copolymer material. A pressure roll for a xerographic fusing apparatus having an outer layer of a copolymer of perf luoroalkyl perf luorovinyl ether and tetrdluoroethylene is described in U.S. Patent 3,912,901. The method of this disclosure is also applicable to the bonding of other fluorocarbon sleeve materials onto roll substrates.

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XEROX DISCLOSURE JOURNAL

MANUFACTURE OF SLEEVED FUSER ROLL
Richard G. LaBombard

Edward G. Williams

This disclosure relates to a fuser roll or a pressure roll for a fusing apparatus utilized in fixing toner images to support sheets wherein the roll comprises a rigid core and an outer layer over the rigid core, the outer layer comprising a copolymer of perf luoroalkyl perf luorovinyl ether with tetraf luoroethylene. The outer copolymer layer is placed over the core in the form of a heat-shrinkable sleeve comprising the copolymer material. A pressure roll for a xerographic fusing apparatus having an outer layer of a copolymer of perf luoroalkyl perf luorovinyl ether and tetrdluoroethylene is described in U.S. Patent 3,912,901. The method of this disclosure is also applicable to the bonding of other fluorocarbon sleeve materials onto roll substrates.

In general, the bonding procedure for the melt-processable polymers of the type used in this disclosure embraces heating the sleeve above its melting temperature to allow it to wet the surface to which it becomes adhered. However, in most of the prior art techniques, entrapped air between the sleeve material and the substrate to which it becomes adhered expands during the heating step and results in a blister and a de-bonded area. The method of the present disclosure eliminates the problem caused by entrapped air.

In accordance with the present disclosure, a fluorocarbon sleeve material, preferably of about 1 - 2 mils wall thickness, having an inside diameter of approximately 0.1 inch smaller than the roll to which it is to be bonded, is applied to the substrate or core. The sleeve material may be a...