Electrophotographic apparatus

Details Electrophotographic apparatus Electrophotographic apparatus

1978-08-31

1980-05-13

Braun, Fred L.

Photocopying

Including fiber optics

355 10, 430 33, G03G 1500, G03G 1510

Patent

active

042026199

ABSTRACT:
Apparatus for imaging electrophotographic film which has a short focal length optical gate for focusing a monochromatic light pattern onto the photoconductive layer of electrostatically charged film. The gate transmits and focuses the imaging light onto the film which is advanced over the surface of the optical gate while being lubricated by an optical liquid having an index of refraction closely matching that of the optical gate. The optical gate and liquid transmit and focus the images on the film at their point of contact. The optical gate may be a cylindrical rod which also may serve in part to define a reservoir for an electrophoretic liquid or toner which blends with the optical liquid adjacent the focal point of the optical gate.

REFERENCES:
patent: 2752833 (1956-07-01), Jacob
patent: 3582205 (1971-06-01), Carreira
patent: 3609029 (1971-09-01), Egnaczak
patent: 3684362 (1972-08-01), Weigl
patent: 3783756 (1974-01-01), Friedel
patent: 3834803 (1974-09-01), Tsukada
patent: 4130359 (1978-12-01), Groner
patent: 4141640 (1979-02-01), Roberts

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