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:
Jan. 20, 2026
Filed:
Dec. 22, 2022
Hiroya Abe, Kanagawa, JP;
Atsuo Hirai, Kanagawa, JP;
Hiroya Abe, Kanagawa, JP;
Atsuo Hirai, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A belt device includes a rotatable belt, a pressure rotator opposite to the belt, a nip formation pad, a belt guide, a member, and lubricant. The nip formation pad is disposed inside a loop of the belt to form a nip between the belt and the pressure rotator. The belt guide is disposed on an inner circumferential surface of the belt. The member comes into contact with an end of the belt guide in a width direction of the belt. The lubricant is applied between the inner circumferential surface of the belt and the nip formation pad. A difference between a solubility parameter of the lubricant and a solubility parameter of the belt guide is 0.5 MPaor more.