| 摘要 |
PROBLEM TO BE SOLVED: To provide a developer replenishment kit in which the replenishment accuracy of a developer from the developer replenishment kit to an image forming apparatus is higher.SOLUTION: The developer replenishment kit comprises a developer replenishment container and the developer stored in the developer replenishment container and can be attached to and detached from a developer replenishment device. The developer replenishment container includes a developer storage part storing the developer, a discharge port through which the developer stored in the developer storage part is discharged, a drive receiving part to which a driving force is inputted from the developer replenishment device, and a pump part operated so that the internal pressure of the developer storage part is alternately and repeatedly switched between a state of being lower than atmospheric pressure and a state of being higher than the atmospheric pressure by the driving force received by the drive receiving part. The developer stored in the developer replenishment container has toner containing a binder resin and a colorant. The developer satisfies the following expression: 10≤E(mJ)≤800.4≤Ea(mJ)≤2.0, where E is the total energy when air is not ventilated and Ea is the total energy when air is ventilated. |
