| 摘要 |
<p>Conventionally, the developer in the developer supply container is discharged by an air-supply pump and a suction pump which are provided in the main 5 assembly side of the image forming apparatus, and therefore, the developer is compacted by the increase of the internal pressure of the developer supply container resulting from the air-supply. Therefore, the proper suction of the developer from the developer 10 supply container becomes difficult with the result of shortage of the developer amount to be supplied. A bellow-like pump is provided on the side of the developer supply container, and the pump alternately repeats the suction operation and the 15 discharging operation through the discharge opening by a driving force inputted from the image forming apparatus side. By this, the developer can be sufficiently loosened, thus properly discharging the developer. 8676766vl (P012005 Specification as filed)</p> |
