Hot melt ink jet transparency
AssigneeSpectra, Inc.
InventorsLinda T. Creagh, Charles W. Spehrley, Jr.
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Abstract
In the particular embodiments of the invention described in the specification, a transparency includes a transparent substrate made of a polyester material, a colored ink pattern disposed on one surface of the transparent substrate in the form of three-dimensional ink spots having curved surfaces, and spots of a colorless ink made of a material which has an index of refraction approximately the same as that of the colored ink spots deposited in overlapping relation to colored ink spots as to reduce the dispersion of light by those ink spots. In one embodiment, the colorless ink spots are located in regions having no colored ink spots and in another embodiment the colorless ink spreads to a greater extent than the colored ink.
Claims23
A transparency comprising a transparent substrate, a colored ink pattern on the substrate containing three-dimensional spots of colored ink having curved surfaces and having an index of refraction, and a pattern of spots of colorless ink on the substrate having centers which are laterally displaced with respect to the centers of the colored ink spots on the substrate and having approximately the same index of refraction as that of the colored ink spots in which there is no substantial diffusion of a colored ink into colorless ink.
A method for preparing a transparency comprising applying colored ink to a surface of a transparent substrate to form an ink pattern containing three-dimensional spots of colored ink having curved surfaces, and applying a pattern of three-dimensional spots of colorless ink having centers which are laterally displaced with respect to the centers of colored ink spots on the substrate and having curved surfaces to the surface of the transparency without substantial diffusion of a colored ink into the colorless ink.
Dependencies are inferred from the claim text.