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:
May. 31, 2011
Filed:
Sep. 19, 2007
Shigeru Obata, Ibaraki, JP;
Yoshihiro Fukuhata, Hyogo, JP;
Masahiro Yagi, Ibaraki, JP;
Toshio Ogiso, Osaka, JP;
Shigeru Obata, Ibaraki, JP;
Yoshihiro Fukuhata, Hyogo, JP;
Masahiro Yagi, Ibaraki, JP;
Toshio Ogiso, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The fixing device includes a fixing unit, a pressure unit that comes into pressure-contact with the fixing unit to form a nip, and control guides. The fixing unit includes a heat roller. The pressure unit includes a pressure belt, and a pressure pad. The pressure pad is attached to a holder and pressed by a spring through a stay, thereby bringing the pressure belt into pressure-contact with the heat roller. The control guides on both sides of the pressure pad control deformation of the pressure pad in an axial direction of the heat roller to make a nip shape uniform.