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:
Nov. 29, 1988
Filed:
Mar. 31, 1986
Eric B Hochberg, Altadena, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Method and apparatus for full-color reproduction of a continuous tone color picture or scene using multiple diffraction gratings and masking techniques. A properly photosensitized media, containing regular arrays of multiple diffraction gratings (70), is first created using computer-generated masks and an interferometric recording technique. This plate is referred to as the 'white grating canvas' master or WGC master. Reflective and/or transmissive replicas of the WGC master are then created. For the reproduction of each unique scene, one of these WGC replicas is selectively masked in order to leave only certain gratings or portions thereof active. Photographic or xerographic means are two possible ways in which the masking might be accomplished. The selective masking of the WGC itself, or an intermediate material which is then laminated in registration with the WGC, is done in such a way as to reproduce the primary color components in the original scene when properly illuminated and viewed.