Invention Grant
- Patent Title: Developing device, image forming apparatus, and development error detecting method
- Patent Title (中): 显影装置，成像装置和显影误差检测方法
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Application No.: US12099525Application Date: 2008-04-08
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Publication No.: US07831182B2Publication Date: 2010-11-09
- Inventor: Rumi Konishi , Kenji Asuwa , Yoshiko Ogawa , Shuuichi Nakagawa , Ryuji Inoue , Shin Murayama , Kazushige Oonishi , Shintaro Yamada
- Applicant: Rumi Konishi , Kenji Asuwa , Yoshiko Ogawa , Shuuichi Nakagawa , Ryuji Inoue , Shin Murayama , Kazushige Oonishi , Shintaro Yamada
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-116549 20070426
- Main IPC: G03G15/08
- IPC: G03G15/08
Abstract:
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.
Public/Granted literature
- US20080267641A1 DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND DEVELOPMENT ERROR DETECTING METHOD Public/Granted day:2008-10-30
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