发明申请
US20100239328A1 DEVELOPING APPARATUS, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND TONER
有权
开发设备，图像形成设备，图像形成方法和调色剂
- 专利标题： DEVELOPING APPARATUS, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND TONER
- 专利标题（中）： 开发设备，图像形成设备，图像形成方法和调色剂
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申请号： US12722338申请日： 2010-03-11
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公开(公告)号： US20100239328A1公开(公告)日： 2010-09-23
- 发明人: Yoichi YAMADA , Tomohiro ARUGA , Daisuke MATSUMOTO , Yoshio NAKAZAWA
- 申请人： Yoichi YAMADA , Tomohiro ARUGA , Daisuke MATSUMOTO , Yoshio NAKAZAWA
- 申请人地址： JP Tokyo
- 专利权人： SEIKO EPSON CORPORATION
- 当前专利权人： SEIKO EPSON CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2009-070843 20090323
- 主分类号： G03G15/08
- IPC分类号： G03G15/08 ; G03G9/00
摘要：
A developing apparatus includes: a housing which contains toner; a toner supporting roller; and a regulating blade, wherein bias voltage is applied to the regulating blade, the toner includes, an insulating external additive and an electrically-conductive external additive, satisfies any of the following first to third conditions, the first condition: a volume average grain diameter of the electrically-conductive external additive is larger than a volume average grain diameter of the insulating external additive, the second condition: a volume average grain diameter of the electrically-conductive external additive is larger than a volume average grain diameter of the insulating external additive in which coverage in the toner is higher than that of the electrically-conductive external additive, and the third condition: coverage of the electrically-conductive external additive in the toner is higher than coverage of the insulating external additive that is larger in volume average grain diameter than the electrically-conductive external additive.
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