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:
Apr. 15, 2014
Filed:
May. 01, 2009
Masami Okamoto, Yamato, JP;
Jun Okamoto, Kawasaki, JP;
Kazuo Suno, Mito, JP;
Kenji Nozawa, Hitachinaka, JP;
Naoto Suzuki, Hitachinaka, JP;
Syoichi Kaneko, Ishioka, JP;
Yoshihiro Sonohara, Hitachi, JP;
Keisuke Kubota, Hitachinaka, JP;
Takashi Kagami, Mito, JP;
Hiroyuki Shimada, Zama, JP;
Masami Okamoto, Yamato, JP;
Jun Okamoto, Kawasaki, JP;
Kazuo Suno, Mito, JP;
Kenji Nozawa, Hitachinaka, JP;
Naoto Suzuki, Hitachinaka, JP;
Syoichi Kaneko, Ishioka, JP;
Yoshihiro Sonohara, Hitachi, JP;
Keisuke Kubota, Hitachinaka, JP;
Takashi Kagami, Mito, JP;
Hiroyuki Shimada, Zama, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A fixing device includes a rotatable first nip formation member, a rotatable second nip formation member, a first heater, a second heater, and a controller. The second nip formation member is provided under the first nip formation member to contact the first nip formation member to form a fixing nip portion between the first nip formation member and the second nip formation member. The first heater heats the first nip formation member. The second heater heats the second nip formation member. The controller supplies a portion of power to the second heater and the remainder of power to the first heater when a plurality of sheets having a sheet weight not greater than about 100 g/mpasses through the fixing nip portion continuously.