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:
Sep. 22, 2026
Filed:
Dec. 03, 2021
Synztec Co., Ltd., Kanagawa, JP;
Shogo Suzuki, Kanagawa, JP;
Atsushi Ikeda, Kanagawa, JP;
Satoshi Fukuoka, Kanagawa, JP;
Kenji Sasaki, Kanagawa, JP;
SYNZTEC CO., LTD., Kanagawa, JP;
Abstract
A charging roll includes a core, a rubber substrate arranged around the core, and a surface layer arranged around the rubber substrate. The surface layer includes a conductive matrix containing a base material formed of an insulator, and a conductive material dispersed in the base material, and particles of a surface roughness-imparting material dispersed in the conductive matrix. Each of the particles of the surface roughness-imparting material is formed of an insulator, is porous, and has a specific surface area of 8.7 m/g or greater and 55 m/g or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile