| 摘要 |
PROBLEM TO BE SOLVED: To provide a developer storage container capable of preventing the deformation and breakage of a driving coupling member, regardless of the material quality of the driving coupling member.SOLUTION: A developer storage container 71 is attachable to and detachable from an image forming apparatus body and includes a driving coupling 74A which can be connected to a main body coupling 85A and is provided at the end of the shaft of an agitator 73A. The driving coupling member includes a projection part 742 which comes into contact with a main body coupling member, to receive a driving force and a rotation prevention part such as a rotation prevention part 743 which is integrally provided with the projection part and attached to the end of the shaft. The projection part and the rotation prevention part are closely arranged so that the center of the projection part is located in a range where it is slightly advanced from the rotation prevention part in the rotational direction of the shaft by a predetermined angle, from the position where the projection part faces the rotation prevention part.SELECTED DRAWING: Figure 18 |
