| 摘要 |
An electrophotographic copying machine developer vessel includes a vessel proper having a closed top, a barrel and a tapered inclined portion continuous to the barrel. The developer vessel also includes a receiving plate removably attachable to the vessel proper, the receiving plate having a substantially flat supporting surface, substantially straight two side edges for attachment to the developing device and an opening communicating with the vessel proper. An opening tab composed of a film which covers the opening of the receiving plate is peelably bonded to the flat supporting surface thereof. A shutter is provided which includes a plate having, on both the sides thereof, engagement portions to be engaged with both the side edges of the receiving plate. The shutter may engage the receiving plate of the developer vessel such that when the developer vessel is removed from a copying machine, the presence of the shutter thereunder prevents scattering of developer in the environment.
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