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. 24, 2010
Filed:
Feb. 28, 2008
Akiko Ito, Machida, JP;
Kenji Ishii, Kawasaki, JP;
Tadashi Ogawa, Machida, JP;
Satoshi Ueno, Kawasaki, JP;
Hiroshi Seo, Sagamihara, JP;
Akiko Ito, Machida, JP;
Kenji Ishii, Kawasaki, JP;
Tadashi Ogawa, Machida, JP;
Satoshi Ueno, Kawasaki, JP;
Hiroshi Seo, Sagamihara, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes a magnetic flux generator, a rotating heat generation member, a magnetic flux adjuster, and a driver. The magnetic flux generator generates a magnetic flux. The rotating heat generation member rotates and applies heat to a recording medium bearing an image, and includes a heat-generating layer to generate heat using the magnetic flux generated by the magnetic flux generator. The magnetic flux adjuster is provided outside the rotating heat generation member, and decreases the magnetic flux applied to the heat-generating layer at least in a desired area in an axial direction of the rotating heat generation member. The driver changes the desired area by driving the magnetic flux adjuster in a direction of rotation of the rotating heat generation member.