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. 21, 2006
Filed:
Jun. 10, 2003
Shotaro Yoshimura, Shizuoka, JP;
Shotaro Yoshimura, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a heating apparatus in which a plurality of heating bodies are provided and a ratio of an electrical amounts supplied to the respective heating bodies can be changed, two or more phase electrical power supplying devices for supplying electrical power to the heating bodies in accordance with a phase of AC voltage are provided, and a heating ratio of the heating body is changed by thinning, at a predetermined rate, phase wave forms for supplying an electrical power to one of the heating bodies among combinations of the heating body and the phase electrical power supplying devices, thereby preventing increase in terminal noise voltage.