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:
Jan. 07, 1997
Filed:
Jun. 03, 1994
Applicant:
Inventors:
Yasumasa Ohtsuka, Yokohama, JP;
Shunji Nakamura, Yokohama, JP;
Kouichi Okuda, Yokohama, JP;
Yohji Tomoyuki, Ichikawa, JP;
Akira Hayakawa, Tokyo, JP;
Daizo Fukuzawa, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; H01H / ;
U.S. Cl.
CPC ...
339335 ; 200 6108 ; 219216 ; 337403 ; 338307 ; 399 33 ;
Abstract
A heater includes a base plate, and a resistor, extending in a longitudinal direction of the base plate, for generating heat when a power supply is applied thereto. A recess, such as a hole or groove, is formed in the base plate in a longitudinal portion of the resistor, to bias the base plate to break at the longitudinal portion and to open a circuit including the power supply and the resistor, to safely prevent overheating or smoking of the heater.