| 摘要 |
<p>A developer supply container detachably mountable to an image forming apparatus, the developer supply container includes a main body for accommodating a developer; a discharge opening, provided in the main body, for permitting discharge of the developer; a shutter member for opening and closing the discharge opening; a rotatable member which is rotatable relative to the main body to effect opening and closing movement of the shutter member; a regulating member for limiting a rotation of the rotatable member in a direction of opening the shutter member, wherein the regulating member includes an extended portion integral with the rotatable member and extended substantially along the opening rotational direction of the rotatable member and a limiting projection, projected from the extended portion toward the main assembly, for abutment to a stopper projection of the main body, wherein the regulating member has an abutting portion for abutment to an image forming apparatus in a mounting operation of the developer supply container, and the limiting projection displaces to a position where it is incapable of abutting the stopper projection.
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