| 摘要 |
PROBLEM TO BE SOLVED: To provide a developer storage unit that has excellent dischargeability of developer.SOLUTION: A developer storage unit comprises: a flexible container that is provided inside a frame body, stores a developer, and has an opening through which the developer is discharged during image formation; a pressure member that is provided inside the frame body, and presses to deform the flexible container; an engaging part that is provided to the frame body, and engages the flexible container with the frame body; and an engagement target part with which the flexible container is engaged by the engaging part. When the pressure member presses the flexible container, the flexible container is held to be movable with respect to the engaging part. |
