POWDER STORAGE DEVICE

To make a powder uniform in an axial direction of a conveying member, compared with a case where a rotating member is not included which rotates to pass a powder through between a powder accumulation member and the rotating member.SOLUTION: A developing device 14 comprises: a developer holding body 144 that holds a developer (example of powder) supplied to an image holding body that forms an electrostatic latent image; conveying means 146, 147 that convey the developer including a toner and a carrier; a regulation member 145 that regulates the developer held on the developer holding body 144 to be a prescribed amount; a developer accumulation member 51 that is arranged on the upstream side of the regulation member 145 in the direction of rotation of the developer holding body 144, and forms an accumulation part 50 where the developer is accumulated; and a rotating member 53 that is located between the developer accumulation member 51 and the developer holding body 144, and rotates to pass the developer through between the developer accumulation member 51 and the rotating member.SELECTED DRAWING: Figure 2 【課題】粉体溜め部材との間に粉体を通過させるように回転する回転部材を備えない場合に比べて、搬送部材の軸方向に粉体を均一にする。【解決手段】静電潜像を形成する像保持体に供給される現像剤（粉体の一例）を保持する現像剤保持体１４４と、トナーおよびキャリアを含む現像剤を搬送する搬送手段１４６，１４７と、現像剤保持体１４４に保持される現像剤が規定量になるように規制する規制部材１４５と、規制部材１４５の現像剤保持体１４４の回転方向の上流側に配置され、現像剤が溜まる溜まり部５０を形成する現像剤溜め部材５１と、現像剤溜め部材５１と現像剤保持体１４４との間に位置し、現像剤溜め部材５１との間に現像剤を通過させるように回転する回転部材５３と、を有する現像装置１４である。【選択図】図２