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:
Sep. 20, 2016
Filed:
Dec. 09, 2014
Yutaka Ikebuchi, Kanagawa, JP;
Hiroshi Yoshinaga, Chiba, JP;
Takayuki Seki, Kanagawa, JP;
Yuji Arai, Kanagawa, JP;
Ryuuichi Mimbu, Kanagawa, JP;
Shuntaro Tamaki, Kanagawa, JP;
Kazuya Saito, Kanagawa, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Toshihiko Shimokawa, Kanagawa, JP;
Masaaki Yoshikawa, Tokyo, JP;
Toshiharu Hachisuka, Kanagawa, JP;
Yutaka Ikebuchi, Kanagawa, JP;
Hiroshi Yoshinaga, Chiba, JP;
Takayuki Seki, Kanagawa, JP;
Yuji Arai, Kanagawa, JP;
Ryuuichi Mimbu, Kanagawa, JP;
Shuntaro Tamaki, Kanagawa, JP;
Kazuya Saito, Kanagawa, JP;
Shuutaroh Yuasa, Kanagawa, JP;
Toshihiko Shimokawa, Kanagawa, JP;
Masaaki Yoshikawa, Tokyo, JP;
Toshiharu Hachisuka, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a first heater disposed opposite and heating at least a center of a fixing belt in an axial direction thereof and a second heater disposed opposite and heating at least a lateral end of the fixing belt in the axial direction thereof. A power supply supplies power to the first heater and the second heater. A controller that controls the power supply includes a calculator to calculate an elapsed time elapsed after at least one of the first heater and the second heater starts heating the fixing belt. The controller controls the power supply to supply power to the first heater and the second heater such that a power density of the second heater is greater than a power density of the first heater when the elapsed time calculated by the calculator is smaller than a predetermined time.