Patent ID: 7664442
Filing Date: 2010-02-16
Classification: G03G

Abstract:
1. A developing apparatus comprising: a developer carrying member carrying a developer, and developing an electrostatic image formed on an image bearing member with the developer; a developer supplying and removing member provided apart from the developer carrying member for supplying the developer to the developer carrying member, and for removing the developer from the developer carrying member, wherein the developer supplying and removing member includes a conductive member and an insulating member provided on the surface of the developer supplying and removing member, and in a position of supplying the developer from the developer supplying and removing member to the developer carrying member, a moving direction of the developer carrying member is opposite to a moving direction of the developer supplying and removing member; and an electric field producing device producing an electric field between the developer carrying member and the developer supplying and removing member, the electric field being an oscillating electric field, in which a direct potential of the conductive member is the same as a direct potential of the developer carrying member, or the direct potential of the conductive member, with respect to the direct potential of the developer carrying member, is on an opposite side to a normal charging polarity of the developer.