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:
Dec. 07, 1999
Filed:
Oct. 23, 1998
Applicant:
Inventor:
Eiji Sawamura, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399330 ; 7442 / ; 219216 ; 399328 ;
Abstract
A fixing device for thermally fixing a toner image formed on a recording medium by an image forming apparatus is disclosed. A heat roller included in the fixing device is prevented from moving in its axial direction or thrust direction without causing any leak to occur. While a heating layer and a temperature sensor are electrically isolated from each other, the temperature sensor can accurately sense the surface temperature of the heat roller without damaging the surface of the heat roller.