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Invention Grant
US07991330B2 Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridge 有权
显影单元，包括具有供应路径，恢复路径和搅拌路径的显影剂输送系统，包括显影单元的处理盒，以及包括处理盒

Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridge
Abstract:
A developing unit includes a developer bearing member, a developer transporter, a developer conveyance system for directing the developer, including a supply path, a recovery path, and an agitation path, a developer supply opening through which the developer is supplied to the developer conveyance system, a developer supply device for supplying the developer from the developer supply opening to the developer conveyance system, a developer discharge device for discharging the developer outside the developing unit, a developer level rise detector for detecting increase in a level of the developer between the downstream end of the recovery path facing the developer bearing member in the direction of developer transport and a portion of the agitation path where the agitation path receives the collected developer from the recovery path, and a controller for controlling the developer discharge device based on the detection result provided by the developer level rise detector.
Abstract(Chinese):

显影单元包括显影剂承载构件，显影剂输送器，用于引导显影剂的显影剂输送系统，包括供给路径，回收路径和搅拌路径，显影剂供给口，显影剂通过该显影剂供给口供给到显影剂输送 系统，用于将显影剂从显影剂供应开口供应到显影剂输送系统的显影剂供应装置，用于将显影剂排出显影单元的显影剂排出装置，显影剂水平上升检测器，用于检测显影剂供应 在显影剂传送方向上面向显影剂承载部件的恢复路径的下游端部和搅拌路径部分，其中搅拌路径从回收路径接收收集的显影剂;以及控制器，用于基于检测来控制显影剂排出装置 结果由开发者级别上升检测器提供。

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