Cartridge and image forming apparatus

A cartridge comprising:

• a toner accommodating portion configured to accommodate toner and provided with an opening through which the toner is received;
• a shutter rotatable about a rotational axis between a closed position where the shutter closes the opening and an open position where the shutter opens the opening, the shutter including a first end portion and a second end portion opposite from the first end portion with respect to a direction of the rotational axis;
• and
• a restricting member provided on a side of the second end portion of the shutter, the restricting member including a first engaging portion, and the restricting member being movable between an engaging position where the first engaging portion engages with the shutter so as to restrict rotation of the shutter from the closed position to the open position and a released position where engagement between the first engaging portion and the shutter is released so that the rotation of the shutter from the closed position to the open position is allowed,
• wherein the restricting member includes a second engaging portion engageable with the shutter so that when the shutter is in the closed position, movement of the restricting member relative to the shutter in a direction from the first end portion toward the second end portion is restricted.