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:
Jul. 29, 2008
Filed:
Feb. 20, 2007
Hiroyoshi Matsumoto, Ibaraki, JP;
Toshio Ogiso, Ibaraki, JP;
Shigeru Obata, Ibaraki, JP;
Masahiro Yagi, Ibaraki, JP;
Chikara Hiraoka, Ibaraki, JP;
Chiharu Kamoshida, Ibaraki, JP;
Hiroyoshi Matsumoto, Ibaraki, JP;
Toshio Ogiso, Ibaraki, JP;
Shigeru Obata, Ibaraki, JP;
Masahiro Yagi, Ibaraki, JP;
Chikara Hiraoka, Ibaraki, JP;
Chiharu Kamoshida, Ibaraki, JP;
Ricoh Printing Systems, Ltd., Tokyo, JP;
Abstract
A disclosed fixing device includes: a heat roller unit having a rotatable roller having an elastic body on a surface thereof and a heating unit heating the roller; a pad disposed along a circumference of the elastic body of the heat roller; a belt member disposed on a curved surface of the pad, the belt member rotating by following a rotation of the heat roller; and a pressure member pressing the belt member to the heat roller using the pad, the fixing device causing a conveyed recording medium carrying a visualized image to pass through a space between the heat roller and the pressure member so as to fix the visualized image on the recording medium, wherein a curvature of the curved surface of the pad is changed in a central portion and end portions in an axial direction of the heat roller.