Browse Prior Art Database

OIL FILLED SILICONE ELASTOMERS FOR FUSER ROLLS

IP.com Disclosure Number: IPCOM000024400D
Original Publication Date: 1980-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 1 page(s) / 50K

Publishing Venue

Xerox Disclosure Journal

Abstract

This invention relates to the use of silicone elastomers for fuser rolls in the electrostatographic copying process. In the fusing of a toner image onto a support such as a sheet of paper, it is known to use silicone elastomers as the outer layer on a fuser roll. However, such a fuser roll generally requires the use of a silicone fluid or oil, commonly referred to as the release agent, and the concomitant presence of a release agent management system. The present invention provides that the silicone elastomer outer layer on the fuser roll be made with a silicone fluid as a component thereof. Such an oil filled elastomer will provide releasing capability internally and thus, minimize or eliminate the need for the external addition of release agent during the fusing operation. The silicone fluid added to the elastomer for incorporation therein should have relatively low viscosity, for example, a 50 centistroke oil in comparison to the viscosity of release agents normally used on the surface of fuser rolls. The use of low viscosity silicone fluid as a component of the silicone elastomer causes the greatest reduction in the modulus of elasticity in the resultant elastomer, and this has a beneficial effect on the useful life of the elastomer.

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XEROX DISCLOSURE JOURNAL

OIL FILLED SILICONE ELASTOMERS FOR FUSER ROLLS
Clifford 0. Eddy
Edward Schlueter, Jr.

Proposed Classification
U.S. C1. 29/132 Int. C1. B21b 31/08

This invention relates to the use of silicone elastomers for fuser rolls in the electrostatographic copying process. In the fusing of a toner image onto a support such as a sheet of paper, it is known to use silicone elastomers as the outer layer on a fuser roll. However, such a fuser roll generally requires the use of a silicone fluid or oil, commonly referred to as the release agent, and the concomitant presence of a release agent management system. The present invention provides that the silicone elastomer outer layer on the fuser roll be made with a silicone fluid as a component thereof. Such an oil filled elastomer will provide releasing capability internally and thus, minimize or eliminate the need for the external addition of release agent during the fusing operation. The silicone fluid added to the elastomer for incorporation therein should have relatively low viscosity, for example, a 50 centistroke oil in comparison to the viscosity of release agents normally used on the surface of fuser rolls. The use of low viscosity silicone fluid as a component of the silicone elastomer causes the greatest reduction in the modulus of elasticity in the resultant elastomer, and this has a beneficial effect on the useful life of the elastomer.

Volume 5 Number 4 July/August 1980 343

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