发明名称 |
Image forming unit, process cartridge, and image forming apparatus |
摘要 |
An image forming apparatus includes a plurality of toner-image forming units. Each toner-image forming unit includes a photosensitive drum and a charging unit that is arranged to abut against or remain detached from the photosensitive drum, and that electrically charges the photosensitive drum. Each of the toner-image forming units forms an image of a different color. At least one of the charging units functions as a corona charging unit and at least another one of the charging units functions as a non-contact charging unit.
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申请公布号 |
US7715761(B2) |
申请公布日期 |
2010.05.11 |
申请号 |
US20070852572 |
申请日期 |
2007.09.10 |
申请人 |
RICOH COMPANY, LIMITED |
发明人 |
UDA JUNROH;IWAI SADAYUKI |
分类号 |
G03G15/02;G03G15/01;G03G21/00;G03G21/16 |
主分类号 |
G03G15/02 |
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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