Invention Grant
- Patent Title: Charging roll
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Application No.: US17630546Application Date: 2019-08-29
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Publication No.: US11714364B2Publication Date: 2023-08-01
- Inventor: Kosuke Oura , Shogo Suzuki , Satoshi Hukuoka , Kenji Sasaki
- Applicant: NOK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NOK CORPORATION
- Current Assignee: NOK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- International Application: PCT/JP2019/033944 2019.08.29
- International Announcement: WO2021/038799A 2021.03.04
- Date entered country: 2022-01-27
- Main IPC: G03G15/02
- IPC: G03G15/02 ; G03G15/08 ; G03G15/16 ; G03G15/00 ; F16C13/00

Abstract:
An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The arithmetic mean peak curvature Spc of a surface of the surface layer is equal to or greater than 1,880 (1/mm), and is equal to or less than 14,024 (1/mm) The density of peaks Spd of the surface of the surface layer is equal to or greater than 93,406 (1/mm2), and is equal to or less than 151,476 (1/mm2). The surface area of the surface layer per unit projected area is equal to or greater than 1.255, and is equal to or less than 5.132.
Public/Granted literature
- US20220252996A1 ELECTROCONDUCTIVE ROLL Public/Granted day:2022-08-11
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