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:
Jan. 13, 2009
Filed:
Aug. 11, 2005
Chikara Hiraoka, Hitachi, JP;
Toru Hanashima, Hitachi, JP;
Masahiko Saito, Hitachi, JP;
Shunichi Oohara, Hitachinaka, JP;
Toshio Ogiso, Hitachi, JP;
Chikara Hiraoka, Hitachi, JP;
Toru Hanashima, Hitachi, JP;
Masahiko Saito, Hitachi, JP;
Shunichi Oohara, Hitachinaka, JP;
Toshio Ogiso, Hitachi, JP;
Ricoh Printing Systems, Ltd., Tokyo, JP;
Abstract
To accomplish high-speed fixing which requires high-precision temperature control, or fixing of high-quality color images on various kinds of paper without increasing the size and production cost of the temperature detecting means and contaminating the back sides of paper by toner that comes off from the temperature detecting element, an image forming device is equipped with a fixing device comprising a heating roller, a pressing belt which forcibly contacts the heating roller, and a temperature detecting means which touches the surface of the heating roller to sense the surface temperature of the heating roller, wherein a cleaning means to clean the belt surface is provided on a place which is corresponding to a place at which the contact-type thermistor touches the heating roller.