Invention Grant
- Patent Title: Charging roller
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Application No.: US16073977Application Date: 2017-02-01
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Publication No.: US10466611B2Publication Date: 2019-11-05
- Inventor: Takehiro Sano
- Applicant: BRIDGESTONE CORPORATION
- Applicant Address: JP Chuo-ku, Tokyo
- Assignee: BRIDGESTONE CORPORATION
- Current Assignee: BRIDGESTONE CORPORATION
- Current Assignee Address: JP Chuo-ku, Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2016-017283 20160201
- International Application: PCT/JP2017/003667 WO 20170201
- International Announcement: WO2017/135324 WO 20170810
- Main IPC: G03G15/02
- IPC: G03G15/02 ; F16C13/00 ; G03G15/16 ; G03G15/08

Abstract:
An object of the present invention is to provide a charging roller in which detachment of particles from a surface layer as well as abrasion and scraping of the particles, which are caused by contact and the like with other member such as a photoreceptor during the use, are unlikely to occur. The charging roller includes: a shaft 1; and an elastic layer 2 and a surface layer 3, which are sequentially formed on the outer circumference of the shaft 1. The surface layer 3 is composed of a mixture of a surface layer resin composition and particles, the surface layer resin composition has a tensile elongation at break of 51% or greater, and the particles have a reaction force of 1.0 to 10.3 mN under 1-μm compression.
Public/Granted literature
- US10571822B2 Charging roller Public/Granted day:2020-02-25
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