发明授权
- 专利标题： Developing device and image forming apparatus using the same
- 专利标题（中）： 显影装置和使用其的图像形成装置
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申请号： US12693723申请日： 2010-01-26
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公开(公告)号： US08270882B2公开(公告)日： 2012-09-18
- 发明人: Koichi Mihara , Yasuyuki Ishiguro
- 申请人： Koichi Mihara , Yasuyuki Ishiguro
- 申请人地址： JP Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JP Osaka
- 代理机构： Nixon & Vanderhye P.C.
- 优先权： JP2009-21451 20090202
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
In a developing device including a developing vessel for storing a developer, a first conveying passage, a second conveying passage, a first conveying member, a second conveying member and a developing roller, the first conveying member has a first rotary shaft and a first conveying blade formed on the periphery of the first rotary shaft, the first conveying blade has a first inner helical blade formed on the periphery of the first rotary shaft and a first outer helical blade arranged along the axis of the first rotary shaft and radially outside the outer periphery of the first inner helical blade, and the helical pitch of the first outer helical blade is specified to be shorter than the helical pitch of the first inner helical blade.
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