Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,...
Patent
1983-05-17
1985-06-18
Martin, Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
430 5, 430 14, 430 16, 430 18, 430961, 355132, G03G 1304, G03G 1322
Patent
active
045241163
ABSTRACT:
The invention provides a master for use in image transfer by contact printing onto a transparent electrophotographic (TEP) film, which comprises an electrically insulating substrate having a planar surface which carries image elements deposited thereon; and a thin transparent insulating layer covering said planar surface and said image elements. The surface of the thin transparent insulating material is preferably profiled so that it comprises a base level and raised portions extending above said base level, the area of the raised portions being small compared to the total surface area of the transparent insulating layer. A thin transparent electrode may be incorporated between the substrate and the thin transparent insulating layer.
Methods of forming such a master and of contact printing with it are also disclosed.
REFERENCES:
patent: 3244546 (1966-04-01), Cranch
patent: 3676002 (1972-07-01), Moreau et al.
patent: 3909262 (1975-09-01), Goffe et al.
patent: 3944419 (1976-03-01), Bigatel et al.
patent: 4226933 (1980-10-01), Ishizawa et al.
Comtech Research Unit Limited
Martin Roland E.
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