Patent ID: 7295798
Filing Date: 2007-11-13
Classification: G03G

Abstract:
1. A developer supply device which is detachably installed in an image forming apparatus and supplies developer to an outside of the developer supply device by rotating a cylindrical developer container containing the developer on an axis line of the developer container as a rotation axis, the developer supply device comprising: an exit in a recessed portion provided on an outer circumferential surface of the developer container; a support member, by surrounding at least a recessed portion forming region formed around the outer circumferential surface along a direction of rotation of the developer container so as to include an area where the recessed portion is provided, rotatably holding the developer container, and having a developer supply port for supplying, to the outside of the developer supply device, the developer ejected from the exit into the recessed portion; a scraping member, provided in the developer supply port so as to slide along the recessed portion forming region during rotation of the developer container, scraping the developer in the recessed portion by sliding along the recessed portion in the recessed portion forming region; a shutter provided in the support member, for opening and closing the developer supply port; and a position detection section stopping rotation of the developer container at a position where the exit is above a boundary surface of the developer.