Photocopying – Including fiber optics
Patent
1976-03-15
1979-01-23
Pellinen, A. D.
Photocopying
Including fiber optics
346151, G03G 1600
Patent
active
041358074
ABSTRACT:
A method and apparatus for repeated recording and quenching or erasing of deformation images on a recording material composed of a photoconductive thermoplastic recording layer arranged on a dielectric support layer wherein the development and quenching is effected by thermal heat supplied to a conductive layer on a film rostrum above which the recording material, which carries a charge image, is transported. Before and during the thermal quenching by a movable corona device, electrostatic charges are applied to the recording layer. The charges have a polarity opposite to that of the charge image on the recording layer. This charge image is produced by the application of an electrostatic charge and the exposure of the charged surface of the recording layer to an image pattern. The high voltage of the corona device is reversible when the corona device is switched from forward to backward movement.
REFERENCES:
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patent: 3672883 (1972-06-01), Ciccarelli et al.
patent: 3698893 (1972-10-01), Heurtley
patent: 3795514 (1974-03-01), Jvirblis et al.
patent: 3836362 (1974-09-01), Goffe
patent: 3874789 (1975-04-01), Weber
patent: 4034381 (1977-07-01), Moraw et al.
Hoechst Aktiengesellschaft
Pellinen A. D.
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