发明申请
- 专利标题： Development apparatus, image forming apparatus and development method
- 专利标题（中）： 开发装置，成像装置及开发方法
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申请号： US11712107申请日： 2007-02-28
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公开(公告)号： US20070212122A1公开(公告)日： 2007-09-13
- 发明人: Takeshi Maeyama , Toshiya Natsuhara , Junya Hirayama , Masahiko Matsuura , Shigeo Uetake
- 申请人： Takeshi Maeyama , Toshiya Natsuhara , Junya Hirayama , Masahiko Matsuura , Shigeo Uetake
- 专利权人： KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
- 当前专利权人： KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
- 优先权： JPJP2006-059196 20060306; JPJP2007-002256 20070110; JPJP2007-036120 20070216
- 主分类号： G03G15/09
- IPC分类号： G03G15/09
摘要：
The purpose is to be provide, in a development apparatus using a two-component developer, a compact development apparatus, image forming apparatus and development method that prevents carrier deterioration and that can carry out good image formation over a long time period. In a development apparatus using a developer in which are mixed a toner, a carrier, and opposite polarity particles that are charged to a polarity opposite to the charging polarity of the toner, the surface charge density of the opposite polarity particles should be in the range of 0.5 to 3.0 times the surface charge density of the carrier.
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