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:
Oct. 06, 2026
Filed:
May. 02, 2025
Kyocera Document Solutions Inc., Osaka, JP;
Yasushi Imanishi, Osaka, JP;
Yuzuru Nanjo, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An image forming apparatus includes an image forming portion, a fixing device, a fixing voltage power supply, and a control portion. The fixing device includes an endless fixing belt, a fixing roller inside it with a metal base and an elastic layer on its outer circumference, a pressing roller in pressed contact with the fixing roller across the fixing belt, and an induction heating portion heating the fixing belt. The control portion calculates, as a cumulative electric power supply time, the cumulative value of the supply time of a predetermined electric power supplied to the induction heating portion, and determines the remaining lifetime of the fixing roller by comparing, as its lifetime, the failure time y [min] of the elastic layer, calculated with the supplied electric power substituted in the damage electric power x [W] in lifetime prediction formula (1), with the cumulative electric power supply time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile