Patent attributes
A developer supply container detachably mounts to a developer receiving apparatus and supplies a developer by rotation and includes a regulation portion for determining whether or not the developer supply container should be mounted by being regulated by a regulation member of the developer receiving apparatus and a lead portion which is movable relative to a guiding portion of the developer receiving apparatus so that the regulation member and the regulation portion are in phase with each other. When the developer supply container is inserted in a direction of a rotation axis thereof, a phase of the regulation portion with the regulation member is determined by movement of the lead portion of the developer supply container relative to the guiding portion of the developer receiving apparatus and then is regulated by the regulation member.