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Invention Grant
CN105911834B 显影装置、图像形成装置和用于显影装置的显影剂承载体 失效 - 权利终止

显影装置、图像形成装置和用于显影装置的显影剂承载体
Abstract:
本发明提供显影装置、具备该显影装置的图像形成装置以及用于显影装置的显影剂承载体，所述显影装置具备框体、显影剂承载体以及磁铁部件。框体收纳具有磁性的显影剂。显影剂承载体可旋转地支撑于框体，外周面用于承载显影剂。磁铁部件具有固定于显影剂承载体的内部的旋转轴和固定于旋转轴的周向的多个显影剂承载体侧磁极。对于磁铁部件，显影剂承载体侧磁极中的偶数个由塑料磁铁形成，其他的一个以上的磁极由橡胶磁铁形成，夹着旋转轴对置的一对以上的塑料磁铁为相同形状，并相对于旋转轴轴对称地固定。
Abstract(English):

A developing device includes a housing, a developer carrying member, and a magnet member. The housing contains magnetic developer. The developer carrying member is rotatably supported on the housing and carries the developer on its circumferential surface. The magnetic member has a shaft fixed inside the developer carrying member and a plurality of developer carrying member-side magnetic poles fixed to the shaft in its circumferential direction. An even number of the developer carrying member-side magnetic poles are formed by plastic magnets, one or more other of the developer carrying member-side magnetic poles are formed by rubber magnets, and one or more pairs of the plastic magnets located opposite each other across the shaft have the same shape and are fixed in axial symmetry with respect to the shaft.

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