Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making named article
Patent
1986-03-31
1988-04-12
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making named article
430 7, 430290, 430367, 35016217, 35016223, 355 32, G02B 518, G02B 2752, G03C 500
Patent
active
047374489
ABSTRACT:
Method and apparatus for full-color reproduction of a continuous tone color picture or scene using multiple diffraction gratings. The reproduction consists of a plurality of small diffraction gratings (70). A plurality of color separation masks (60) are created for each unique scene. Those picture elements in the original scene containing a given primary color are captured in these transmission-type masks. In certain zones dictated by the separation masks, a plurality of interference patterns are recorded in the properly photosensitized media (70). The spatial freqency of said interference patterns correlates to the primary color to be reproduced. These interference patterns become multiple diffraction gratings when properly developed. The properly photosensitized media may be used as a master for replication purposes. When either master or replica (78) are properly illuminated in white light (76) and properly viewed, the multiple diffraction gratings act to reproduce the colors in the original scene.
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K. Knop, "Diffraction Gratings for Color Filtering in the Zero Diffraction Order", Applied Optics, vol. 17, No. 22, Nov. 15, 1978, pp. 3598-3603.
Charles Shapiro, ed., The Lithographers Manual, 4th ed., Chapter Six: Color-Separation Photography, The Graphic Arts Technical Foundation, Inc., Pittsburgh, Pa., 1968, pp. 615 to 618.
Hamilton Cynthia
Michl Paul R.
Weiss Franklyn C.
Xerox Corporation
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