Patent ID: 7292811

Claim:
A toner supply container detachably mountable to an image forming apparatus, said toner supply container comprising: a container body for containing toner, said container body having an opening; a shutter for closing and opening the opening; a first gear portion provided in said shutter; a rotational member manually rotatable relative to said container body in a first rotational direction and a second rotational direction opposite to the first rotational direction; and a second gear portion provided in said rotational member, wherein in a state in which said toner supply container is set to the image forming apparatus, a drive transmission path from said rotational member to said shutter is established by engagement of said first gear portion with a first gear member of a drive transmission mechanism provided in the image forming apparatus and engagement of said second gear portion with a second gear member of the drive transmission mechanism, and said shutter is movable toward an opening position by a rotation of said rotational member in the first rotational direction and is movable toward a closing position by a rotation of said rotational member in the second rotational direction, wherein said rotational member is contactable to a part of the image forming apparatus in a mounting operation of said toner supply container to the image forming apparatus and rotates in the first rotational direction to a predetermined first position with the mounting operation before the drive transmission path is established, wherein in a state in which said toner supply container is set to the image forming apparatus, when said rotational member is rotated in the second rotational direction to close said shutter, said rotational member is rotatable to a predetermined second position which is downstream of said first position with respect to the second rotational direction, wherein in a dismounting operation for dismounting said toner supply container from the image forming apparatus, the shutter of which is closed, said rotational member is rotatable in the first rotational direction from the second position to the first position before the drive transmission path is disconnected by said rotational member contacting a part of the image forming apparatus, and wherein said shutter is substantially non-movable toward the opening position when said rotational member is rotating from the second position to the first position in the dismounting operation.