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. 09, 2008
Filed:
Dec. 22, 2004
Jiro Shirakata, Kashiwa, JP;
Shouhei Takeda, Toride, JP;
Koki Watanabe, Moriya, JP;
Shinichiro Wakahara, Tokyo, JP;
Koji Takematsu, Abiko, JP;
Koichiro Nishimura, Tsukubamirai, JP;
Jiro Shirakata, Kashiwa, JP;
Shouhei Takeda, Toride, JP;
Koki Watanabe, Moriya, JP;
Shinichiro Wakahara, Tokyo, JP;
Koji Takematsu, Abiko, JP;
Koichiro Nishimura, Tsukubamirai, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In order to prevent non-sheet passing portion temperature rise occurred in a non-sheet passing area of an electromagnetic induction heating member, leakage of magnetic flux is reduced by setting a Curie temperature of the heating memberto be smaller than an acceptable upper limit temperature and setting a thickness of the heating member so that a thickness tk in a Curie temperature arrival area (P−P) is larger than a thickness tn in a Curie temperature non-arrival area Pwhich is a conveyance area of a material to be heated having a minimum passing size.