| 摘要 |
A developer supply container for supplying developer to a developer receiving portion of a main assembly of the image forming apparatus of an electrophotographic type, the developer supply container being mountable to the main assembly, the developer supply container includes an accommodating portion for accommodating a developer; a discharge opening for permitting discharge of the developer; a stirring member for stirring the developer ; a stirring drive receiving portion, provided in one of opposing sides of the supply container, for receiving a stirring driving force for driving the stirring member from a stirring drive transmitting portion provided in the main assembly and for transmitting the stirring driving force to the stirring member; an openable member movable to open and close the opening; an opening and closing drive receiving portion, provided in the openable member, for receiving an opening and closing driving force for moving the openable member; an opening and closing drive transmitting portion, provided in the other of the opposing sides, for transmitting an opening and closing driving force to the opening and closing drive receiving portion through an opening and closing driving relay portion provided in the main assembly; wherein by mounting the container to the main assembly, drive force transmittable engagements are established between the stirring drive transmitting portion and the stirring drive receiving portion, between the opening and closing drive transmitting portion and the opening and closing driving relay portion, and between the opening and closing driving relay portion and the opening and closing drive receiving portion, respectively, so that stirring force is transmittable from the stirring drive transmitting portion to the stirring drive receiving portion, and the opening and closing driving force is transmittable from the opening and closing drive transmitting portion to the opening and closing drive receiving portion, and wherein a mounting direction in which the developer supply container is mounted to the image forming apparatus is against a force received by the developer supply container from the main assembly; an engaging portion, provided adjacent each of the sides, for limiting movement of the developer supply container in a dismounting direction by engagement with a locking portion provided in the main assembly of the image forming apparatus when the developer supply container is mounted to the main assembly of the image forming apparatus.
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