The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1992
Filed:
Jun. 20, 1990
Dale Blake, Wooster, OH (US);
Donald Redding, Pasadena, CA (US);
Metromedia Company, Secaucus, NJ (US);
Abstract
A method for producing a large scale color graphic that presents substantially the same spectral content to a viewer when the graphic is illuminated with front or back lighting includes applying an ink film on a first surface and a second ink film on a second surface wherein the ink film creates the desired colored graphic image and which images produced are in registry with one another. A light source located on the same side as an observer viewing the image passes light through the ink film in one direction and is reflected back through the ink in a substantially opposite direction so that light reaching the observer passes through the equivalent of two ink film thicknesses. A light source located in back of the image so that the image is between the light source and an observer passes light through the first and second ink film layers in a direction toward the observer so that the observer views light having a spectral content that passes through the equivalent of two ink film thicknesses and replicates the spectral content of light from a light source located on the same side as the observer.