Developing apparatus

显影装置

Abstract

A developing apparatus including: a developer carrying member carrying a developer with which an electrostatic image on an image bearing member is developed; a developer supplying/removing member having a conductive member and an insulating member on the surface thereof, and provided apart from the developer carrying member to supply and remove the developer to and from the developer carrying member, and moving directions of the developer carrying member and the developer supplying/removing member being opposed in a developer supplying position; and an electric field producing device producing between the developer carrying member and the developer supplying/removing member an oscillating electric field, in which direct potentials of the conductive member and the developer carrying memberare the same, or the direct potential of the conductive member, with respect to the direct potential of the developer carrying member, is on the opposite side to a normal charging polarity of the developer.
本发明提供一种显影装置,包括:显影剂承载体,承载显影剂,用显影剂对形成在像承载体上的静电像进行显影;显影剂供给除去部件,为了对显影剂承载体供给显影剂,并且从显影剂承载体上除去显影剂,与显影剂承载体相离地设置,显影剂供给除去部件具有导电部件和绝缘部件,在从显影剂供给除去部件向显影剂承载体供给显影剂的位置,显影剂承载体的移动方向为与显影剂供给除去部件的移动方向相反的方向;以及电场形成装置,在显影剂承载体和显影剂供给除去部件之间形成电场,电场为振动电场,是导电部件的直流电位与显影剂承载体的直流电位相同、或者导电部件的直流电位相对于显影剂承载体的直流电位与显影剂的正常的带电极性相反的振动电场。

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    US-4641602-AFebruary 10, 1987Kabushiki Kaisha ToshibaDeveloping apparatus
    US-5387963-AFebruary 07, 1995Fuji Xerox Co., Ltd.One-component developing device

NO-Patent Citations (2)

    Title
    JP特开平9-127771A 1997.05.16
    US 6337966 B1,全文.

Cited By (0)

    Publication numberPublication dateAssigneeTitle