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:
Nov. 15, 1994
Filed:
Mar. 29, 1993
Kouichi Okuda, Yokohama, JP;
Shunji Nakamura, Yokohama, JP;
Yasumasa Ohtsuka, Yokohama, JP;
Yohji Tomoyuki, Ichikawa, JP;
Akira Hayakawa, Tokyo, JP;
Daizo Fukuzawa, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image heating apparatus includes a heater; a temperature detecting member for detecting a temperature of the heater; the controller for controlling electric power supplied to the heater so that the temperature detected by the temperature detecting member is maintained at a predetermined temperature; comparing device for comparing the temperature detected by the temperature detecting member to the reference temperature; wherein, when the detected temperature remains to be no less than the reference temperature for a predetermined period of time, the controller reduces a duty ratio of the electric power to be supplied to the heater.