Patent ID: 7430390

Claim:
A toner supply container detachably mountable to a main assembly of an image forming apparatus, said toner supply container comprising: a main body for accommodating toner; a discharge opening for permitting discharge of the toner accommodated in the main body; a shutter member for opening and closing said discharge opening, said shutter member including a driving force receiving portion for receiving a driving force for opening and closing said discharge opening from a drive transmission mechanism provided in the main assembly; a manually operable movable member for producing the driving force, said movable member including a driving force transmitting portion for transmitting the driving force to the drive transmission mechanism, wherein transmission of the driving force from said driving force transmitting portion to said driving force receiving portion through said driving transmission mechanism is enabled by mounting said toner supply container to the image forming apparatus, wherein a position of said movable member when transmission of the driving force from said driving force transmitting portion to said driving force receiving portion through said driving transmission mechanism is enabled by mounting said toner supply container to the image forming apparatus is downstream, with respect to a moving direction upon opening said shutter member, of a position provided by a maximum movement distance of said movable member upon closing said shutter member such that a maximum movement distance of said movable member upon closing said shutter member is larger than a maximum movement distance of said movable member upon opening said shutter member.