| 摘要 |
Apparatus for applying dry toner to a surface bearing an electrostatic image is disclosed using a mixture of magnetic particles and toner in a trough having a wall extending upwardly and progressively close to the image surface. A magnet is moved upwardly parallel to that wall for carrying a quantity of the mixture into contact with the surface. A gate in the trough permits a quantity of fresh mixture to pass upwardly along the wall and the spent mixture to move downwardly over the gate to the opposite side of the trough.
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