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:
May. 30, 2023
Filed:
Nov. 24, 2021
Ryohei Matsuda, Kanagawa, JP;
Ryuuichi Mimbu, Kanagawa, JP;
Toshihiko Shimokawa, Kanagawa, JP;
Satoshi Kuno, Tokyo, JP;
Kentaro Yamanaka, Kanagawa, JP;
Ryohei Matsuda, Kanagawa, JP;
Ryuuichi Mimbu, Kanagawa, JP;
Toshihiko Shimokawa, Kanagawa, JP;
Satoshi Kuno, Tokyo, JP;
Kentaro Yamanaka, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A fixing device includes a fixing rotator over which a recording medium bearing an image is conveyed. A first heater heats the fixing rotator and generates heat evenly in a maximum conveyance span where the recording medium having a maximum width in a width direction of the recording medium is conveyed. The maximum width is available for the fixing rotator. A second heater heats the fixing rotator and generates heat in the maximum conveyance span. The second heater includes a first portion that generates heat in a first heat generation amount and a second portion that generates heat in a second heat generation amount that is greater than the first heat generation amount of the first portion.