DEVELOPER SUPPLY CONTAINER AND DEVELOPER SUPPLY SYSTEM.

摘要

Provided are a developer supply container and a developer supply system capable of properly discharging a developer from the developer supply container to a developer supply apparatus from an initial stage. A developer supply container (1) attachable/detachable to/from a developer supply apparatus (8) includes: a container body (1a) containing a developer; an exhaust port (1c) through which the developer contained in the container body (1a) is discharged; a holding member (3) to which a driving force is input from the developer supply apparatus (8); a pump part (2) that operates in a manner that the internal pressure of the container body (1a) is repeatedly and alternately switched between a state lower than the atmospheric pressure and a state higher than the atmospheric pressure by the driving force received by the holding member (3); and the holding member (3) and a lock member (55) constituting a restricting part that restricts the position of the pump part (2) at the beginning of the operation so that air is taken into the container body (1a) from the exhaust port (1c) during a first operating period of the pump part (2).