Invention Grant
- Patent Title: Conductive roller, image forming apparatus, and inspection method for conductive roller
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Application No.: US18016944Application Date: 2021-05-10
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Publication No.: US11947272B2Publication Date: 2024-04-02
- Inventor: Shogo Suzuki , Atsushi Ikeda , Satoshi Fukuoka , Kenji Sasaki
- Applicant: NOK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NOK CORPORATION
- Current Assignee: NOK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: GREENBLUM & BERNSTEIN, P.L.C.
- Priority: JP 20123422 2020.07.20
- International Application: PCT/JP2021/017766 2021.05.10
- International Announcement: WO2022/018932A 2022.01.27
- Date entered country: 2023-01-19
- Main IPC: G03G15/02
- IPC: G03G15/02 ; G03G15/00

Abstract:
A conductive roller includes: a core member including an outer surface along and about an axial line thereof; and a surface layer arranged along the outer surface of the core member. The surface layer includes a conductive portion formed of a conductive resin composition, and a surface roughness imparting material in a form of particles dispersed in the conductive portion. An average particle size of the surface roughness imparting material is in a range of 6 micrometers or greater and 10 micrometers or less. The number of particles of the surface roughness imparting material per unit area of the surface layer is in a range of 1.0×104 particles per mm2 or greater and 2.0×106 particles per mm2 or less. An average thickness of the surface layer is in a range of 3.0 micrometers or greater and 15.0 micrometers or less.
Public/Granted literature
- US20230314979A1 CONDUCTIVE ROLLER, IMAGE FORMING APPARATUS, AND INSPECTION METHOD FOR CONDUCTIVE ROLLER Public/Granted day:2023-10-05
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