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:
Aug. 02, 2011
Filed:
Oct. 04, 2007
Tetsuya Kagawa, Hoi-gun, JP;
Tetsuya Kagawa, Hoi-gun, JP;
Konica Minolta Business Technologies, Inc., Chiyoda-Ku, Tokyo, JP;
Abstract
There is provided a fixing deviceincluding a heating bodywhich has a heating heat generation sectionsubjected to induction heating upon application of alternating magnetic fields generated by a exciting coil, a pressure rollerwhich has a pressing heat generation sectionbeing higher in magnetic permeability than the heating heat generation sectionand being subjected to induction heating by a part of magnetic flux in the alternating magnetic fields leaking from the heating heat generation section, and a drive circuit for applying drive voltage to the exciting coil, wherein a rate of the alternating magnetic fields leaking from the heating heat generation sectionis changed by frequencies of the drive voltage.