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. 09, 2003
Filed:
Jan. 31, 2002
Applicant:
Inventors:
Yoshikazu Naito, Osaka, JP;
Akira Takasu, Osaka, JP;
Takahiro Tsujimoto, Osaka, JP;
Kiyohito Tsujihara, Osaka, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/520 ; H05B 6/40 ;
U.S. Cl.
CPC ...
G03G 1/520 ; H05B 6/40 ;
Abstract
An induction heating and fixing device includes a hollow cylindrical fixing member, a core for forming a closed magnetic circuit, a ring member formed of magnetic material and provided on the core in the vicinity of the bilateral ends of the fixing member, a coil wound around the core, and a pressure member disposed so as to press against the fixing member. This device suppresses temperature drop at the bilateral ends of the fixing roller and maintains uniform temperature distribution in the axial direction of the fixing roller by leaving the device open at both bilateral ends.