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US 4,172,721 AGranted
Dye-amplified imaging process
AssigneeXerox Corporation
InventorJohn F. Byrne
Life of this patent
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Abstract
A color separation imaging process employing an imaging monolayer of particles comprising a resin carrier containing color-photosensitive material, and a solid-form dye material. The monolayer is exposed between two members, one transparent, under the influence of an electric field. A color separation image is formed upon splitting the sandwich, and the image is then subjected to thermal energy in order to imbibe the dye into a suitable substrate, thus producing a brilliantly-amplified color image.
Claims15
A method of imaging comprising:
- (a) providing an imaging monolayer including a mixture of at least two different composite particles with correspondingly different spectral sensitivities in an electrically insulating liquid, said composite particles including a non-photosensitive solid-form dye material and color-photosensitive material, in combination with a resin;
- (b) applying an electric field across the imaging monolayer;
- (c) exposing the monolayer to an image pattern of electromagnetic radiation to which at least some of said composite particles are sensitive;
- (d) separating the photosensitized composites from the unsensitized composites during the application of an electric field whereby a positive and negative image is formed corresponding to the original image pattern;
- and
- (e) imbibing the dyes of an image into a substrate material, in order to color-amplify the image.
3 more elements
Dependencies are inferred from the claim text.