Invention Grant
- Patent Title: Charging member including a conductive support and surface layer having protrusions formed on a surface thereof, a process cartridge including same for use in an image forming apparatus
- Patent Title (中): 充电构件包括导电支撑件和在其表面上形成有突起的表面层,包括用于图像形成装置的处理盒
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Application No.: US12699380Application Date: 2010-02-03
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Publication No.: US07869741B2Publication Date: 2011-01-11
- Inventor: Hiroshi Mayuzumi , Tomohito Taniguchi
- Applicant: Hiroshi Mayuzumi , Tomohito Taniguchi
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2008-281601 20081031
- Main IPC: G03G21/18
- IPC: G03G21/18 ; G03G15/02

Abstract:
A charging member is provided which can inhibit defective images due to poor charging and adhering substances from occurring even after being repeatedly used for a long time, and can inhibit deformation and defective images due to the C set, caused by a change in rotational speed accompanying such deformation even after being left standing in a stopping state for a long time. The charging member includes a conductive support and a surface layer. The surface layer includes a binder and resin particles dispersed in the binder, each resin particle having a depressed portion on its surface. Protrusions resulting from the resin particles are formed on the surface of the surface layer. The protrusions each have a depressed portion resulting from the depressed portion of the resin particle, and the surface of the resin particle is covered with the binder.
Public/Granted literature
- US20100135695A1 CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2010-06-03
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