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:
Mar. 10, 2026
Filed:
Apr. 08, 2024
Sumitomo Riko Company Limited, Aichi, JP;
Naoki Akira, Aichi, JP;
Manabu Sakuda, Aichi, JP;
Sumitomo Riko Company Limited, Aichi, JP;
Abstract
The present disclosure provides a paper feed roll that inhibits conveyance failure even during long term use by suppressing unevenness in the surface of an elastic material layer when the elastic material layer is formed by two or more phases. A paper feed rollaccording to the present disclosure is provided with a shaft bodyand an elastic material layerformed on the outer peripheral surface of the shaft body. The elastic material layerincludes a first phase containing ethylene propylene diene rubber and a second phase containing one or more of either isoprene rubber or natural rubber. The area ratio of the second phase is within the range of 30% or more and 70% or less in a range of any given 2.5 μm×2.5 μm square of the elastic material layer