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. 22, 2018
Filed:
Sep. 07, 2016
Kohji Kuwana, Kanagawa, JP;
Takahiro Inoue, Kanagawa, JP;
Kohji Kuwana, Kanagawa, JP;
Takahiro Inoue, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A heating device including a heating member, a heat source, multiple non-contact temperature detectors, a contact temperature detector, a heat source drive controller, and a temperature detection abnormality detector is provided. The heating member contacts a heating target being conveyed. The heat source supplies heat to the heating member. Each of the non-contact temperature detectors detects a first temperature of the heating member without contacting the heating member. The contact temperature detector detects a second temperature of the heating member by contact with the heating member. The heat source drive controller controls drive of the heat source based on the first temperatures. The temperature detection abnormality detector performs a determination on whether each one of the non-contact temperature detectors has an abnormality or not while the heating target is not conveyed, by comparing the first temperature and the second temperature.
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