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:
Jul. 19, 2022
Filed:
Jun. 09, 2021
Kyocera Document Solutions Inc., Osaka, JP;
Akihiro Kondo, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
A fixing device includes a heated rotational body, a heating unit, a pressing rotational body, a drive unit, a light emitting unit, a light receiving unit, and a drive control part. The heated rotational body has a reflection member. The drive unit rotates the pressing rotational body. The light emitting unit emits infrared light. The light receiving unit receives the infrared light reflected on the reflection member, and receives radiation light of the heated rotational body. The light receiving unit detects a temperature of the heated rotational body based on a receiving of the radiation light. The drive control part obtains a rotational speed of the heated rotational body based on a light receiving period of the infrared light in the light receiving unit and a circumference determined depending on the temperature of the heated rotational body, and controls the drive unit based on the obtained rotational speed.