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:
Mar. 10, 1981
Filed:
Mar. 19, 1979
Ryoichi Namiki, Hino, JP;
Ricoh Company, Ltd., , JP;
Abstract
A device for fixing an image formed by electrostatic adhesion of toner particles on a copy sheet, wherein such copy sheet is passed between a pair of fixing rollers consisting of a fixing roller and a follower roller, the fixing roller having an offset preventing oil fed to its surface and being heated as required. The fixing roller and the follower roller each include a base material layer made of silicone rubber which is not caused to swell by the offset preventing oil and is swellable thereby. The fixing roller further include a thin surface layer formed on the outer surface of the base material layer and made of silicone rubber which has affinity with a silicone oil. The offset preventing oil may be a fluoroalkyl radical containing silicone oil or a mixture of such oil with an alkylpolysiloxane oil.