Patent ID: 8472848

Claim:
A developer supply container detachably mountable to a developer receiving apparatus including a driving gear, wherein said container mounted to the apparatus is settable to a set position by a rotating operation of said container in a setting direction by an operator, said container comprising: a substantially cylindrical portion configured to contain developer; a developer discharging opening provided on a peripheral surface of said cylindrical portion and configured to permit discharge of the developer in said cylindrical portion; a developer feeding member provided in said cylindrical portion and configured to feed the developer in said cylindrical portion toward said developer discharging opening; a drive receiving member provided on an axial end of said cylindrical portion and configured to engage with the driving gear to receive a rotational force for rotating said developer feeding member relative to said cylindrical portion; and a regulating portion configured and positioned to regulate a mounting attitude of said cylindrical portion relative to the apparatus so that said cylindrical portion is insertable into the apparatus substantially along an axial direction of said cylindrical portion and to prevent engagement between said drive receiving member and the driving gear before said cylindrical portion is rotated toward the set position; wherein said drive receiving member is so disposed that by a rotating operation of said cylindrical portion toward the set position about a center of said cylindrical portion in a setting direction, said drive receiving member is brought into engagement with the driving gear.