| 摘要 |
To provide a developer supply container and a developer supplying system with which the discharging of the developer from the developer supply container to the developer replenishing apparatus can be carried out properly from the beginning. A developer supply container 1 detachably mountable to a developer replenishing apparatus 8 includes a container body 1a for accommodating the developer, a discharge opening 1c for permitting discharge of the developer accommodated in the container body 1a, a holding member 3 for receiving a driving force from the developer replenishing apparatus 8, a pump portion 2 for alternately changing the internal pressure of the container body 1a between a state in which the internal pressure is lower than the ambient pressure and a state in which it is higher than the ambient pressure, by the driving force received by the holding member 3, and a locking member 55 cooperable with the holding member 3 to provide a regulating portion for regulating a position of the pump portion 2 at a start of operation of the pump portion 2 so that in a initial operational period of the pump portion 2, the air is taken into the container body 1a through the discharge opening 1c. |
