Abstract: In electrographic apparatus a latent image on a flexible photoconductor is developed with toner particles at a development station and subsequently transferred to a receiver sheet, such as a copy sheet, and then fused to the sheet. Sometimes unwanted particles are on the photoconductor, including the area where an image is to be developed on the photoconductor. These particles are removed by a magnetic brush system located closely adjacent the surface of the photoconductor prior to the charging station. A biased ski located under the photoconductor presents the photoconductor to the cleaning nap at a predetermined uniform pressure and a desired distance, so that the photoconductor is uniformly cleaned and buffed.

Abstract: A mask for an electroluminescent panel has an elongated aperture through which a moving photoconductive member is exposed. To prevent elongated side strips from bowing, a connecting strip of mask material runs obliquely to the direction of movement of the photoconductive member. Portions of one or both of the elongated side strips are missing to provide additional exposure to the member to compensate for exposure masked by the connecting strip.