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:
Oct. 25, 2011
Filed:
Sep. 15, 2009
Kiyoshi Iwai, Ebina, JP;
Kiyoshi Iwai, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The fixing device includes: a fixing member including a conductive layer and fixing toner on a recording medium by electromagnetic induction; a magnetic-field generating member generating an alternate-current magnetic field intersecting with the conductive layer; a magnetic-path forming member that includes a circular arc facing the magnetic-field generating member, that forms a magnetic path of the alternate-current magnetic field, within a range up to a permeability change start temperature, and that allows the alternate-current magnetic field to go through the magnetic-path forming member within a range exceeding the permeability change start temperature; and a support member supporting the magnetic-path forming member. The circular arc shaped portion has an upstream edge in a moving direction of the fixing member and a position of the upstream edge is concaved toward a center of the magnetic path forming member from each of ends of the magnetic path forming member in a longitudinal direction.