Exposure of imaging sheets utilizing a light valve as a waveleng

Details Exposure of imaging sheets utilizing a light valve as a waveleng Exposure of imaging sheets utilizing a light valve as a waveleng

1985-10-08

1987-06-09

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Liquid crystal process, composition, or product

430138, G03C 516, G03F 900

Patent

active

046720146

ABSTRACT:
A method and apparatus for exposing an imaging sheet to form a latent image in a layer of photosensitive microcapsules on the surface of the imaging sheet utilizes wavelength or frequency transformation of light images representative of the latent image, which transformation is performed by a light valve. An original document, including images which are to be transferred to an imaging sheet, is illuminated by visible light which is directed upon and controls the light valve, such that actinic radiation illuminating the light valve is modulated in accordance with the visible light; the modulated actinic radiation is directed upon the imaging sheet to form a latent image therein. In this way, the original document may be illuminated by visible light which is effectively wavelength or frequency transformed by the light valve into actinic radiation, typically in the ultraviolet range.

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