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:
Jun. 01, 1993
Filed:
Sep. 04, 1991
Applicant:
Inventors:
Kiyoshi Muto, Nagoya, JP;
Makoto Hasegawa, Nagoya, JP;
Assignee:
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
219216 ; 219492 ; 355282 ; 355285 ;
Abstract
A fixing apparatus is provided with a light heater for heating a heat-fixing roller and a temperature detection element for determining the surface temperature of the fixing roller. A temperature corresponding to a lighting time for the heater is determined and compared with the temperature on the surface of the roller and the result of the comparison is used to turn the heater on and off.