| 摘要 |
A development system wherein developer, comprising a mixture of toner particles and carrier beads, is cascaded over the surface of an insulating plate bearing a latent electrostatic image and the toner is attracted from the carrier to the plate to develop the latent image thereon having a device for supplying additional toner to the carrier beads in the development zone as the beads give up toner particles to the plate during the development process including a development electrode located adjacent the development zone having a plurality of apertures and a toner container that places additional toner particles in the apertures of the electrode.
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