发明授权
- 专利标题： Developing device, image forming apparatus, and development error detecting method
- 专利标题（中）： 显影装置，成像装置和显影误差检测方法
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申请号： US12099525申请日： 2008-04-08
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公开(公告)号： US07831182B2公开(公告)日： 2010-11-09
- 发明人: Rumi Konishi , Kenji Asuwa , Yoshiko Ogawa , Shuuichi Nakagawa , Ryuji Inoue , Shin Murayama , Kazushige Oonishi , Shintaro Yamada
- 申请人： Rumi Konishi , Kenji Asuwa , Yoshiko Ogawa , Shuuichi Nakagawa , Ryuji Inoue , Shin Murayama , Kazushige Oonishi , Shintaro Yamada
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2007-116549 20070426
- 主分类号： G03G15/08
- IPC分类号： G03G15/08
摘要：
A disclosed developing device includes a developing roller; a supply roller that is in contact with the developing roller and configured to supply toner to the developing roller; a current measuring unit configured to measure an electric current that flows from the developing roller to the supply roller when the toner is supplied from the supply roller to the developing roller; and an error determining unit configured to detect a development error of the developing roller based on the electric current measured by the current measuring unit.
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