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:
Jun. 21, 2016
Filed:
Dec. 23, 2015
Kyocera Document Solutions Inc., Osaka, JP;
Masaru Torimoto, Osaka, JP;
KYOCERA DOCUMENT SOLUTIONS INC., Osaka, JP;
Abstract
A peripheral surface of a pressing roller in a fixing device has a pair of drive transmission surface portions and a paper passing surface portion. The drive transmission surface portions are respectively formed at both end portions of the pressing roller in an axial direction to transmit rotational driving force of the pressing roller to the fixing belt. The paper passing surface portion is positioned between the pair of drive transmission surface portions and has a dynamic friction coefficient lower than that of the drive transmission surface portion. It is determined whether a slip of the fixing belt occurs based on a difference between temperatures detected by a first temperature sensor that detects the temperature of the drive transmission surface portion and a second temperature sensor that detects the temperature of the paper passing surface portion. Thereby, even a slight slip of the fixing beltis reliably detected.