Invention Grant
US08238768B2 Image forming apparatus including developing unit and toner supplying unit
有权
图像形成装置包括显影单元和调色剂供应单元
- Patent Title: Image forming apparatus including developing unit and toner supplying unit
- Patent Title (中): 图像形成装置包括显影单元和调色剂供应单元
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Application No.: US12571970Application Date: 2009-10-01
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Publication No.: US08238768B2Publication Date: 2012-08-07
- Inventor: Eichi Koizumi , Nobutaka Takeuchi , Akira Yoshida , Shinji Kato
- Applicant: Eichi Koizumi , Nobutaka Takeuchi , Akira Yoshida , Shinji Kato
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-261561 20081008
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G15/09
Abstract:
A first developer container having a toner supplying opening is provided in a developing unit. A toner concentration sensor is arranged downstream of the toner supplying opening to detect toner concentration in developer. A supply controlling unit is provided to determine an excess or a shortage in the amount of supplied toner based on image information correspondingly to a detection result by the toner concentration sensor, and to correct the driving amount of a toner supplying unit that has been determined based on the image information correspondingly to the recognized excess or shortage in the amount of supplied toner.
Public/Granted literature
- US20100086320A1 IMAGE FORMING APPARATUS Public/Granted day:2010-04-08
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