Photomask for electrophotography

Details Photomask for electrophotography Photomask for electrophotography

1985-05-31

1987-06-02

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

Radiation mask

430 14, G03F 900, G03C 300

Patent

active

046703640

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: 3661580 (1972-05-01), Mayaud

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