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:
Apr. 07, 2026
Filed:
Nov. 28, 2023
Takuto Kido, Kanagawa, JP;
Toshiya Satoh, Kanagawa, JP;
Yuichi Tanioku, Kanagawa, JP;
Akihiro Shima, Kanagawa, JP;
Teiichiro Ishikawa, Tokyo, JP;
Yusuke Morikawa, Kanagawa, JP;
Takuto Kido, Kanagawa, JP;
Toshiya Satoh, Kanagawa, JP;
Yuichi Tanioku, Kanagawa, JP;
Akihiro Shima, Kanagawa, JP;
Teiichiro Ishikawa, Tokyo, JP;
Yusuke Morikawa, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A heating device, an image forming apparatus, and a liquid discharge apparatus. The heating device includes a heating roller having heat sources inside to heat a sheet. The heat sources include three or more first heat sources having a same distribution of thermal intensity and a second heat source having a distribution of thermal intensity different from the distribution of the thermal intensity of the first heat sources, and the second heat source is disposed inside a polygon whose vertices are the first heat sources when viewed from one end of the heating roller in a longitudinal direction of the heating roller. The image forming apparatus includes an image forming device to form an image on a sheet, and the heating device to heat the sheet. The liquid discharge apparatus includes a liquid discharge device to discharge liquid onto a sheet, and the heating device to heat the sheet.