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US 4,900,644 AGranted
Unsharp masking of diagnostic radiation intensifying screens
AssigneeE. I. Du Pont de Nemours and Company
InventorJeffrey H. Bell
Life of this patent
Estimating the term…
Abstract
This invention relates to a gradient radiation intensifying screen having as an integral part thereof a tonable, photosensitive layer bearing a toned, anatomically correct, unsharp halftone image.
Claims17
A masked intensifying screen, comprising, in order, a sheet support, a fluorescent layer on the support, and a masking layer adhered to the fluorescent layer, wherein the masking layer comprises a photosensitive layer bearing a toned, anatomically correct, unsharp halftone image.
A process for making a masked intensifying screen, said process comprising, in the stated order, the steps of:
- (a) providing an intensifying screen, comprising in order, a sheet support, a fluorescent layer on the support, and a tonable photosensitive layer adhered to the fluorescent layer.
- (b) exposing said tonable photosensitive layer to actinic radiation through a transparency containing an anatomically correct, unsharp halftone image to produce a tonable latent image thereon, and,
- (c) toning the exposed photosensitive layer to develop the unsharp halftone image.
Dependencies are inferred from the claim text.