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. 10, 2002
Filed:
Feb. 20, 2002
Joji Nagahira, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An induction heating apparatus for heating an image formed on a recording material that has heating device for heating the image on the recording material, the heating device including a heating member and an excitation coil for generating a magnetic flux to induce an eddy current in the heating member, an input impedance of the heating device being variable, a temperature detecting element for detecting a temperature of the heating member, and control device for controlling a frequency of an electrical supply to the excitation coil so that the temperature detected by the temperature detecting element is maintained at a set temperature. In the induction heating apparatus, the control device controls the frequency in accordance with the temperature detected by the temperature detecting element and information regarding the input impedance of the heating device.