Developer storing body, image forming unit and image forming apparatus

摘要

A developer storing body is detachably attached to an image forming unit main body of an image forming unit. The developer storing body includes a cartridge main body for storing a developer. The cartridge main body has a developer outlet opening through which the developer is ejected. The developer storing body includes an outlet shutter member movable with respect to the cartridge main body so as to open and close the developer outlet opening. A movable direction of the outlet shutter member is substantially the same as a direction in which the developer storing body is attached to or detached from the image forming unit main body.