The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2004
Filed:
Apr. 04, 2002
Shigeki Shudo, Annaka, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A liquid form addition curable silicone rubber composition for forming a fluororesin covered fixing roller is provided. This composition includes (a) 100 parts by weight of an organopolysiloxane with at least two alkenyl groups bonded to non-terminal silicon atoms; (b) an organohydrogenpolysiloxane with at least two silicon-bonded hydrogen atoms, in a sufficient quantity to produce a molar ratio of silicon-bonded hydrogen atoms within said constituent (b) relative to silicon-bonded alkenyl groups within said constituent (a) of 0.4 to 5.0; (c) an effective quantity of a platinum based catalyst; (d) 0.1 to 10 parts by weight of dry process silica; and (e) 0.05 to 5 parts by weight of a cyclic diorganopolysiloxane with at least three silicon-bonded alkenyl groups. This composition is used for formation of the silicone rubber layer of a fixing roller made up of a metal core, a silicone rubber layer on the core, and a fluorine based coating provided on the rubber layer. Good adhesion is obtained between the silicone rubber layer and both of the metal core and the fluorine-based coating, and as a result excellent durability is achieved.