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:
Oct. 01, 2024
Filed:
Jul. 06, 2023
Sumitomo Riko Company Limited, Aichi, JP;
Yoshihiro Saito, Aichi, JP;
Shimpei Miyagawa, Aichi, JP;
Sumitomo Riko Company Limited, Aichi, JP;
Abstract
A charging roll includes a shaft body, an elastic body layer formed on an outer circumferential surface of the shaft body, and a surface layer formed on an outer circumferential surface of the elastic body layer. The elastic body layer includes silicone rubber. A plurality of large protruding parts having a width of 13-48 μm and a height of 5-13 μm are provided on the outer circumferential surface of the elastic body layer, and a plurality of small protruding parts forming unevenness having a ten-point average roughness Rz of 1.0-6.0 μm are provided on the surface of the large protruding parts. The surface layer contains a urethane polymer, and the elongation at breakage of the surface layer is 285-525%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile