Stock material or miscellaneous articles – Composite – Of silicon containing
Reexamination Certificate
2001-07-24
2003-05-27
Dawson, Robert (Department: 1712)
Stock material or miscellaneous articles
Composite
Of silicon containing
C428S448000, C428S450000, C524S858000, C524S860000, C524S861000, C524S862000, C524S863000, C528S015000, C528S016000, C528S031000, C528S032000, C528S033000
Reexamination Certificate
active
06569536
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
REFERENCE TO A MICROFICHE APPENDIX
Not applicable.
FIELD OF THE INVENTION
This invention relates to a thermoconductive liquid silicone rubber composition for fixing rolls, and to a fluororesin coated fixing roll. In particular, the fluororesin coated fixing roll and the thermoconductive liquid silicone rubber composition for fixing rolls, have small compression set and are suitable for fixing rolls used in copiers, printers, and fax machines.
BACKGROUND OF THE INVENTION
Thermoconductive silicone rubber compositions mixed with an alumina powder have been described in Japanese Patent Application Publication (Kokai) No. Hei 09-012893, Japanese Patent Application Publication (Kokai) No. Hei 10-039666, and in U.S. Pat. No. 5,223,564. However, the silicone rubber obtained by curing such thermoconductive silicone rubber compositions has large compression set, and when it is used for the fluororesin coated fixing rolls of an electrophotographic copier, printer, or facsimile machine, it exhibits inferior durability.
BRIEF SUMMARY OF THE INVENTION
Thus, it is an object of the invention to provide thermoconductive silicone rubber compositions for fixing rolls capable of producing silicone rubbers of superior heat conductivity and small compression set after curing. It is also an object to provide fluororesin coated fixing rolls prepared with such silicone rubbers.
These and other features of the invention will become apparent from a consideration of the detailed description.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
Not applicable.
REFERENCES:
patent: 5008307 (1991-04-01), Inomata
patent: 5223564 (1993-06-01), Nako et al.
patent: 6025435 (2000-02-01), Yamakawa et al.
patent: 09-012893 (1997-01-01), None
patent: 10-039666 (1998-02-01), None
Oka Yutaka
Tsuji Yuichi
Yoshida Hiroaki
Dawson Robert
De Cesare Jim L.
Dow Corning Toray Silicone Co. Ltd.
Feely Michael J
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