发明授权
US5911098A Development apparatus and method using selectively applied AC voltages
失效
使用选择性施加的交流电压的开发装置和方法
- 专利标题： Development apparatus and method using selectively applied AC voltages
- 专利标题（中）： 使用选择性施加的交流电压的开发装置和方法
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申请号： US14396申请日： 1998-01-27
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公开(公告)号： US5911098A公开(公告)日： 1999-06-08
- 发明人: Eiji Gyotoku , Tamotsu Shimizu
- 申请人： Eiji Gyotoku , Tamotsu Shimizu
- 申请人地址： JPX Osaka
- 专利权人： Minolta Co., Ltd.
- 当前专利权人： Minolta Co., Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX9-013754 19970128; JPX9-013755 19970128; JPX9-035430 19970220
- 主分类号： G03G15/08
- IPC分类号： G03G15/08 ; G03G15/09
摘要：
A development apparatus according to the invention comprises at least two developer carrier members in juxtaposition for transporting a developer material to a development region between the developer carrier members and an image bearing member in opposed relation. An AC voltage applying device is adapted to apply AC voltages to the respective developer carrier members thereby applying AC electric fields to the respective gaps between the developer carrier members and the image bearing member based on an active period to apply the AC electric field and an inactive period to apply no AC electric field. When one of the adjacent developer carrier members is subject to the active period, the other developer carrier member is subject to the inactive period.
公开/授权文献
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