G - Physics – 03 – G
Patent
G - Physics
03
G
314/9
G03G 15/00 (2006.01)
Patent
CA 1078003
ABSTRACT An electrophotographic film member is exposed to an image source, such as a cathode ray tube display unit, and the latent image toned to form a transparency carrying a temporary visible image on said film member at a first station. The film member carrying the temporary visible image is stepwise translated to a projection station where it is projected in an enlarged display upon a suitable receptor surface. Thereafter, the film member is stepwise translated to an erase station where the toner is removed and the film member made ready for reuse to receive another image. The first station includes suitable structure for charging the film member, a selectively operable blind or shutter for exposing the charged film member to the image source and an applicator for applying suitable toner from a toner source to the exposed film member. The toner particles adhere tenaceously but removably to the ex- posed film member without any fixing or fusing process and hence, the toner can be removed from the film member after projection. During charging and toning, the film member is maintained in darkness. The transparency is fully prepared, totally within the confines of a lighttight housing.
243981
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