Browse Prior Art Database

LONG LIFE, THERMALLY CONDUCTIVE HTV SILICONE FOR FUSER ROLL COVERING

IP.com Disclosure Number: IPCOM000024686D
Original Publication Date: 1981-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 53K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to fusing devices for use in electrostatographic copying machines. It is known to use either HTV (high temperature vulcanizable) silicone elastomers or RTV (room temperature vulcanizable) silicone elastomers as the material for forming the covering on a fusing device. The HTV silicones have the advantages of high strength and lower processing costs. However, the HTV silicones have poor life expectancies, which has been attributed to poor polymer bonding to certain fillers, especially to those fillers added to improve thermal conductivity, and poor adhesion to substrates.

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XEROX DISCLOSURE JOURNAL

LONG LIFE, THERMALLY CONDUCTIVE HTV SILICONE FOR FUSER ROLL COVERING Int. C1. G03g 13/20 Clifford 0. Eddy

Proposed Classification US. C1. 430/124

This invention relates to fusing devices for use in electrostatographic copying machines. It is known to use either HTV (high temperature vulcanizable) silicone elastomers or RTV (room temperature vulcanizable) silicone elastomers as the material for forming the covering on a fusing device. The HTV silicones have the advantages of high strength and lower processing costs. However, the HTV silicones have poor life expectancies, which has been attributed to poor polymer bonding to certain fillers, especially to those fillers added to improve thermal conductivity, and poor adhesion to substrates.

In accordance with the present invention, a fusing device having a covering made of an HTV silicone elastomer is cured by an electron beam or other ionizing radiation. Such curing yields silicone ionic species that can interact strongly with filler particles or substrates. In addition, such curing promotes crosslinking density in the region of the filler particles or the substrates. Preferably, the HTV silicone elastomer is one filled with alumina. Optionally, a small amount of Teflon may be incorporated in the HTV silicone formulation.

Volume 6 Number 4 July/August 1981 215

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  XEROX DISCLOSURE JOURNAL Volume 6 Number 4 July/August 1981

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