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. 21, 2020
Filed:
Apr. 23, 2019
Takamasa Hase, Tokyo, JP;
Tomoya Adachi, Kanagawa, JP;
Yuusuke Furuichi, Kanagawa, JP;
Yukimichi Someya, Saitama, JP;
Masahiro Samei, Kanagawa, JP;
Daisuke Inoue, Tokyo, JP;
Takamasa Hase, Tokyo, JP;
Tomoya Adachi, Kanagawa, JP;
Yuusuke Furuichi, Kanagawa, JP;
Yukimichi Someya, Saitama, JP;
Masahiro Samei, Kanagawa, JP;
Daisuke Inoue, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a power controller that starts an examination mode by an external operation. The examination mode detects a temperature-resistance property of a resistive heat generator. The power controller supplies power at a predetermined power duty cycle to the resistive heat generator. The power controller obtains the power supplied to the resistive heat generator and a change in a temperature of the resistive heat generator, that is detected by a temperature detector, while the power controller supplies the power at the predetermined power duty cycle to the resistive heat generator. The power controller calculates the temperature-resistance property of the resistive heat generator based on the power and the change in the temperature that are obtained. The power controller adjusts a power duty cycle at which the power is supplied to the resistive heat generator based on the temperature-resistance property.