| 摘要 |
PROBLEM TO BE SOLVED: To provide a developer storage unit capable of attaining both of downsizing of a developing device and enhancement of efficiency in discharging a developer from a flexible container.SOLUTION: A developer storage unit 25 is configured so that it has an opening part 35a for discharging a developer G, and includes a developer storage member 34 for storing the developer G, frame members 17, 18 for storing the developer storage member 34 and the developer G discharged from the developer storage member 34, and a pressing member 500, provided inside the frame members 17, 18, for pressing the developer storage member 34 so as to deform it. The developer storage member 34 has a first surface part X1 and a second surface part X2, which receive gravity of the developer G stored inside thereof and are partitioned with a flexure part 34r for bending the surfaces, and the first surface part X1, and the second surface part X2 receive a pressing force of the pressing member 500. |
