| 摘要 |
A developer unit for developing a latent image recorded on an image receiving member with a supply of particles, the developer unit including a valve connected to a sump for storing a supply of particles received from a container for use in the developer unit, the valve including a first planar member defining a first aperture therein, wherein the first aperture includes less than one-half of the surface area of the first planar member, a second planar member defining a second aperture therein, wherein the second aperture includes less than one-half of the surface area of the second planar member, the second planar member being substantially the same size and shape as the first planar member and an attaching device, connecting the first planar member and the second planar member in planar contact so that the first planar member and the second planar member are rotatable relative to each other such that in a first rotated position the first aperture and the second aperture are in alignment with each other to form a passage through both of the planar members and in a second rotated position the passage is blocked.
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