Developer container and image-forming apparatus

1. A developer container comprising:

a container body having an inner space capable of containing a developer and an opening communicating with the inner space;

an opening and closing portion that is disposed on the container body and that opens and closes the opening; and

a pair of restraining portions that are disposed on the opening and closing portion and that each restrain the opening and closing portion from being moved from a closed position to an open position, the opening and closing portion being permitted to be moved to the open position if the restraint on the movement of the opening and closing portion by each of the pair of restraining portions is independently removed.

2. The developer container according to claim 1 , wherein the restraint on the movement of the opening and closing portion by the pair of restraining portions is removed as the pair of restraining portions are moved in a direction toward the container body and different from a direction in which the opening and closing portion is opened and closed.

3. The developer container according to claim 1 , further comprising protective portions that are disposed on the container body and that protect the restraining portions when the opening and closing portion is in the closed position.

4. The developer container according to claim 2 , further comprising protective portions that are disposed on the container body and that protect the restraining portions when the opening and closing portion is in the closed position.

5. The developer container according to claim 1 , wherein the opening and closing portion is linearly moved along a surface of the container body to open and close the opening, the restraining portions being located at the center of the opening and closing portion in a direction in which the opening and closing portion is linearly moved.

6. The developer container according to claim 2 , wherein the opening and closing portion is linearly moved along a surface of the container body to open and close the opening, the restraining portions being located at the center of the opening and closing portion in a direction in which the opening and closing portion is linearly moved.

7. The developer container according to claim 3 , wherein the opening and closing portion is linearly moved along a surface of the container body to open and close the opening, the restraining portions being located at the center of the opening and closing portion in a direction in which the opening and closing portion is linearly moved.

8. The developer container according to claim 4 , wherein the opening and closing portion is linearly moved along a surface of the container body to open and close the opening, the restraining portions being located at the center of the opening and closing portion in a direction in which the opening and closing portion is linearly moved.

9. An image-forming apparatus comprising:

the developer container according to claim 1 ;

a mounting to which the developer container is attached; and

a pair of release portions that are disposed on the mounting and that independently release the pair of restraining portions as the developer container is attached.

10. The image-forming apparatus according to claim 9 , further comprising limiting portions that, with the developer container attached to the mounting, limit the movement of the opening and closing portion moved to the open position beyond the open position to a side facing away from the closed position, the developer container further including protective portions that are disposed on the container body and that protect the restraining portions when the opening and closing portion is in the closed position, the protective portions pushing the limiting portions to remove the limitation on the movement of the opening and closing portion by the limiting portions as the developer container is moved in a direction in which the developer container is detached from the mounting.