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. 13, 2008
Filed:
Oct. 19, 2006
Kazuhito Kishi, Kanagawa, JP;
Yasuhisa Kato, Kanagawa, JP;
Akiyasu Amita, Kanagawa, JP;
Masami Okamoto, Kanagawa, JP;
Yasutada Tsukioka, Chiba, JP;
Hiromasa Takagi, Tokyo, JP;
Kazuhito Kishi, Kanagawa, JP;
Yasuhisa Kato, Kanagawa, JP;
Akiyasu Amita, Kanagawa, JP;
Masami Okamoto, Kanagawa, JP;
Yasutada Tsukioka, Chiba, JP;
Hiromasa Takagi, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing unit thermally fixes a toner on a recording medium by a fixing member having a plurality of internal heaters and an outer peripheral surface, and a temperature sensor detects a surface temperature of the fixing member at a temperature detecting position. At least one first heater, of the heaters, receives power from a first power supply, and remaining second heaters receive power from a second power supply. One of the second heaters closest to the temperature detecting position is the same distance from the temperature detecting position as or is closer to the temperature detecting position than a first heater which is closest to the temperature detecting position.