Developer container, developing device, process unit, and image forming apparatus

2:

• The removable device according to claim 1, wherein the torque transmission gear is interlocked with movement of an external shutter to approach the agitating drive gear, and wherein,
• after the torque transmission gear approaches the agitating drive gear, among an axis of the conveying drive gear, an axis of the agitating drive gear, and an axis of the torque transmission gear, the axis of the torque transmission gear is located at a highest position.

3:

• The removable device according to claim 1, wherein, among an axis of the conveying drive gear, an axis of the agitating drive gear, and an axis of the torque transmission gear, the axis of the torque transmission gear is located at a highest position, prior to movement of an external shutter, after the movement of the external shutter, and during the movement of the external shutter.

4:

• The removable device according to claim 1, wherein, when an external shutter is opened, the torque transmission gear moves toward the agitating drive gear.

5:

• The removable device according to claim 1, wherein, when an external shutter is opened, a contacted part moves upward beyond an axis of the conveying drive gear.

6:

• The removable device according to claim 1, wherein an external shutter and a contacted part are integrally formed.

7:

• The removable device according to claim 1, wherein a contacted part extends from an external shutter, and the contacted part is formed by bending.