Image forming apparatus and developer container

A developer container, comprising:

• a developer containing part to contain developer;
• an outlet through which the developer is discharged from the developer containing part to an outside of the developer containing part;
• a first shutter to open and close the outlet;
• wherein the developer container is mountable and removable relative to an apparatus body of an image forming apparatus through an opening of the apparatus body, the image forming apparatus including a cover member to open and close the opening of the apparatus body, a movable member reciprocally movable in forward and reverse directions, and a transmission member to connect the cover member to the movable member, and
• when the movable member is moved in the forward direction, the first shutter is closed, and when the movable member is moved in the reverse direction, the first shutter is opened, and
• wherein a movement direction of the movable member is reversed from the forward direction to the reverse direction in a terminal period of an opening operation of the cover member, and the first shutter is maintained in a closed state while the movable member is moved in the reverse direction after the movement direction is reversed.