Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1984-10-22
1987-03-17
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
15 15R, 1525651, G03G 2100
Patent
active
046503110
ABSTRACT:
A cleaning system for an electrophotographic copying apparatus utilizes an electrostatically active belt which is movable relative to the moving surface of the photoconductive drum. As the electrostatic belt moves past the surface, the electrically charged toner is picked up by the belt and carried away from the drum. At a position remote from the drum, the toner is scraped from the belt, preferably to be reused in later cycles of the system. Preferably, the belt is translucent, and a flourescent lamp is mounted behind the belt to discharge the surface of the drum of the remaining latent image as the toner is removed. Typically, the moving belt incorporates an electrostatic grid having alternating charged portions. These charged interleaved portions of the belt attract the electrically charged toner and hold it to the belt as the toner is moved away from the surface of the drum.
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Braun Fred L.
Ricoh & Company, Ltd.
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