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. 01, 2005
Filed:
Dec. 11, 2003
Takayuki Ogasawara, Yokohama, JP;
Hiroyuki Doi, Yokohama, JP;
Ichiro Yokozeki, Yokosuka, JP;
Manabu Kika, Kamakura, JP;
Toshiya Suzuki, Yokosuka, JP;
Takaaki Tanaka, Yokosuka, JP;
Syouhei Maeda, Yokosuka, JP;
Takayuki Ogasawara, Yokohama, JP;
Hiroyuki Doi, Yokohama, JP;
Ichiro Yokozeki, Yokosuka, JP;
Manabu Kika, Kamakura, JP;
Toshiya Suzuki, Yokosuka, JP;
Takaaki Tanaka, Yokosuka, JP;
Syouhei Maeda, Yokosuka, JP;
Harison Toshiba Lighting Corp., Ehine, JP;
Abstract
An induction heating roller device that keeps leakage current within specifications and prevents the occurrence of erroneous operations caused by common mode noise. The induction heating roller device includes an induction coil, a grounded heating roller magnetically coupled to the induction coil and heated by electro-magnetic induction. A power factor improving capacitor is connected in parallel to and near the induction coil and has a grounded intermediate point. A high-frequency power source biases the induction coil. The leakage current produced by distributed capacitance between the induction coil and the heating roller is returned to the high-frequency power source via the power factor improving capacitor. Thus, the leakage current does not flow out of the induction heating roller device.