Back to results
US 6,190,821 B1Granted
Film materials comprising colored matting particles
AssigneeAgfa-Gevaert
InventorHubert Vandenabeele
Life of this patent
Estimating the term…
Abstract
A photosensitive silver halide film material is disclosed comprising a support and on one or both sides thereof one or more layer(s) comprising a photosensitive silver halide emulsion wherein tabular silver halide crystals having an average thickness of less than 0.25 μm and an average aspect ratio of 2 or more are present characterized in that said photosensitive silver halide emulsion layer(s) comprise(s) blue colored polymeric matting particles.
Claims9
Image-forming method for medical diagnostic imaging comprising:
- providing a photosensitive silver halide film material comprising a support and on one or both sides thereof one or more layers(s) comprising a photosensitive silver halide emulsion wherein tabular silver halide crystals having an average thickness of less than 0.25 μm and an average aspect ratio of 2 or more are present wherein said photosensitive silver halide emulsion layer(s) comprise(s) homodisperse polymeric matting particles free from conglomerates and loaded with blue dye;
- and
- providing said photosensitive silver halide film material in operative association with one or two intensifying screens to process said film material to form an image by image-wise exposure to visible light, generated from converted x-rays, said one or two intensifying screens including a support for said one or two screens wherein said support includes a layer of a light emitting luminescent phosphor.
Dependencies are inferred from the claim text.