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To provide a configuration that can stably perform discharge of developer from a developer supply container.SOLUTION: A developer supply container has a pump unit that can expand and contract to discharge developer. A control unit can execute a normal sequence and a closed period sequence in which a...

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1. Verfasser: OIZUMI YUSUKE
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a configuration that can stably perform discharge of developer from a developer supply container.SOLUTION: A developer supply container has a pump unit that can expand and contract to discharge developer. A control unit can execute a normal sequence and a closed period sequence in which at least the driving speed of the expanded pump unit is faster than that in the normal sequence. The control unit starts the drive of a driving motor in the normal sequence, and when determining that a predetermined amount of developer is not discharged from the developer supply container for a predetermined time from the start of the drive based on information from a developer sensor and a magnetic sensor, can execute the closed period sequence.SELECTED DRAWING: Figure 13 【課題】現像剤補給容器からの現像剤の排出を安定して行える構成を提供する。【解決手段】現像剤補給容器は、伸縮することで現像剤を排出可能なポンプ部を有する。制御装置は、通常シーケンスと、通常シーケンスよりも少なくともポンプ部の伸長時の駆動速度が速い閉塞時シーケンスとを実行可能である。そして、駆動モータの駆動を通常シーケンスで開始し、駆動を開始してから所定時間の間、現像剤センサや磁気センサの情報に基づいて現像剤補給容器から所定量の現像剤が排出されていないと判断した場合には、閉塞時シーケンスを実行可能である。【選択図】図13