Invention Grant
- Patent Title: Charging apparatus and image forming apparatus
- Patent Title (中): 充电装置及成像装置
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Application No.: US11905711Application Date: 2007-10-03
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Publication No.: US07684735B2Publication Date: 2010-03-23
- Inventor: Toshiaki Ino , Syouichi Fujita , Yasuhiro Nishimura , Susumu Murakami
- Applicant: Toshiaki Ino , Syouichi Fujita , Yasuhiro Nishimura , Susumu Murakami
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Nixon & Vanderhye, PC
- Priority: JPP2006-272265 20061003
- Main IPC: G03G15/02
- IPC: G03G15/02

Abstract:
A charging apparatus having a corona electrode is provided which exhibits high durability against ozone and moisture in the air, which can charge a surface of a photoreceptor drum stably throughout the life of an image forming apparatus, and which can be manufactured at a low cost. In a charging apparatus including corona electrode having a flat plate section and a pointed projection section, a support member, a shield case, and a grid electrode, a coating layer including a material different from the material of the corona electrode is formed at least on part of the surface of pointed projections constituting the pointed projection section.
Public/Granted literature
- US20080080896A1 Charging apparatus and image forming apparatus Public/Granted day:2008-04-03
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