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:
Dec. 24, 2024
Filed:
May. 18, 2023
Yuma Matsumoto, Kanagawa, JP;
Keitaro Shoji, Kanagawa, JP;
Yasunori Ishigaya, Kanagawa, JP;
Yuusuke Furuichi, Kanagawa, JP;
Yuma Matsumoto, Kanagawa, JP;
Keitaro Shoji, Kanagawa, JP;
Yasunori Ishigaya, Kanagawa, JP;
Yuusuke Furuichi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A heating device includes: a pair of rotators to form a nip; a heating source having a heat generation area to heat at least one rotator; temperature sensors to detect a temperature of the heating source, a member in contact with the heating source, or one rotator; and a sheet sensor to detect a sheet passing through the nip. The temperature sensors include: a first temperature sensor closer to one end than a center of the heat generation area in the longitudinal direction; and a second temperature sensor closer to the center than the first temperature sensor is. The second temperature sensor is at a position shifted from the center of the heat generation area toward the first temperature sensor. The sheet sensor is on a side opposite a side on which the first temperature sensor is disposed with reference to the center of the heat generation area.