| 摘要 |
Rotating magnetic poles are arranged so that they set up a strong repulsive force at a particular angular position thereof so that toner particles may be thrown by centrifugal force onto a photoconductive member to perform cascade development. The magnetic poles may be disposed in either one or two cylindrical magnetic brushes. The brushes are arranged so that one of them slidingly contacts the surface of the photoconductive member after the cascade development is completed to perform magnetic brush development.
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