Developing Device And Electrophotographic Image Forming Apparatus Using The Same

摘要

A developing device to supply toner in a developer, including a development member that attaches the developer to an outer circumferential surface of the development member and supplies the toner to the image bearing member, a first regulation member including a first regulating portion that forms a first doctor gap between the outer circumferential surface of the development member and the first regulating portion, and a second regulation member disposed on an upstream side of the first regulation member in a rotational direction of the development member and includes a second regulating portion that forms a second doctor gap between the outer circumferential surface of the development member and the second regulating portion, the second doctor gaps at a central portion and both end portions in a longitudinal direction of the development member being different from each other.