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. 22, 1977
Filed:
Apr. 15, 1975
Applicant:
Inventors:
Ryoichi Namiki, Hino, JA;
Shigeru Muramatsu, Tokyo, JA;
Assignee:
Ricoh Co., Ltd., Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219471 ; 219216 ; 219469 ;
Abstract
A roll for fixing a toner image formed on a support sheet in electrophotography comprising a plurality of layers made of a resilient material and arranged around a core disposed about the center axis of the roll. The resilient material layer disposed nearer to the core is electrically conductive and serves to make the roll function as a heating roll. It has a higher hardness than the resilient material layers remote from the core.