发明名称 |
Toner carrier, developing device and image forming apparatus |
摘要 |
An image forming apparatus includes a developing device. The developing device includes a toner carrier (developing roller). The developing roller includes a base member, electrode bars, a pair of electrodes, and a protection layer. The base member includes a conductive core and an insulating layer formed on the outer surface of the core. The electrode bars and the pair of electrodes are made of a conductive metal, and are provided on the outer surface of the insulating layer. The electrode bars and the pair of electrodes are formed in a way that an unnecessary portion of a metal film is irradiated with a laser beam and thus is removed. The electrodes are each formed helically on the outer surface of the base member 1 and formed to taper down toward the outmost side thereof in its cross section.
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申请公布号 |
US8588665(B2) |
申请公布日期 |
2013.11.19 |
申请号 |
US201113051352 |
申请日期 |
2011.03.18 |
申请人 |
ENDO HIROYUKI;KOTAKA KAZUHIRO;RICOH COMPANY, LTD. |
发明人 |
ENDO HIROYUKI;KOTAKA KAZUHIRO |
分类号 |
G03G15/08;G03G15/09 |
主分类号 |
G03G15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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