Patent ID: 7209686

Claim:
A developer supply container detachably mountable to an image forming apparatus, said container comprising: a container body for containing a developer, said container body being rotatable about a rotation axis thereof; a drive coupling member engageable with a driving member provided in the image forming apparatus, wherein said drive coupling member includes a drive transmitting portion for transmitting a rotational force received from the driving member to said container body; and an engaging portion, provided in said container body, engageable with said drive transmitting portion to receive the rotational force, wherein said drive coupling member is movable in a direction substantially parallel with the rotation axis to a position where said drive coupling member is rotatable substantially about the rotation axis relative to said container body, and wherein said drive transmitting portion is engaged with said engaging portion with enough play to compensate for a deviation between the rotation axis and a rotation axis of the driving member when said drive transmitting portion takes the position.