Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Deformation imaging – e.g. – frost imaging – etc.
Patent
1980-10-17
1983-08-09
Kittle, John E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Deformation imaging, e.g., frost imaging, etc.
430 66, G03G 5028
Patent
active
043979300
ABSTRACT:
The record carrier according to the invention comprises a substrate on which an electrode is provided which, on the side remote from the substrate, has a low-ohmic photoconductive layer which is covered with a second transparent electrode which is provided wihh a thermoplastic layer. For storing information the electrodes are connected to a voltage source and the thermoplastic layer is charged electrostatically and exposed in known manner. Upon exposure of an area of the thermoplastic layer, the light will fall through the transparent electrode on the low-ohmic photoconductive layer. As a result of the current passage, Joulean heat is produced which heats the thermoplastic layer in the place of the exposed area and softens it thereby deforming the layer by electrostatic forces in accordance with the charge.
The thermoplastic layer may, in known manner, also have photoconductive properties or be provided with a further photoconductive layer.
REFERENCES:
patent: 3980476 (1976-09-01), Wysocki
patent: 4021236 (1977-05-01), Sheridon et al.
Killat Ulrich
Rabe Gert
Schmitt Hans J.
Briody Thomas A.
Goodrow John L.
Kittle John E.
Mayer Robert T.
Tamoshunas Algy
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