Radiation imagery chemistry: process – composition – or product th – Color imaging process – Color correcting
Patent
1992-12-15
1994-05-10
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Color correcting
430 22, 430143, 430291, 430292, 430293, 430373, 8906, 101486, 106 19A, 106 20A, 106 21A, G03C 700, G03C 500, G03C 518, G03F 900
Patent
active
053106270
ABSTRACT:
A method for locally enhancing the contrast of a yellow image, which method comprises providing a yellow image on a white background, said image comprised of yellow areas and white areas, said yellow areas and white areas exhibiting pH levels which differ by at least 0.5 in an aqueous environment, applying to at least a portion of said yellow image a solution of a pH color changing dye which will change color to a color other than yellow when coated on one of said yellow areas or white areas and not change color when coated on the other of said yellow areas or white areas, thereby forming a colored image duplicating the yellow image in areas where the solution has been applied, said colored image having a visually better contrast than said yellow image.
REFERENCES:
patent: 3451143 (1969-06-01), Thomas et al.
patent: 3617325 (1971-11-01), Spokes et al.
patent: 3672842 (1972-06-01), Florin
patent: 4139965 (1979-02-01), Curry et al.
patent: 4188431 (1980-02-01), Sokol et al.
patent: 4246033 (1981-01-01), von Wartburg
patent: 4744826 (1988-05-01), Iijima
patent: 4777111 (1988-10-01), Blumel et al.
patent: 4869996 (1989-09-01), McCartin et al.
patent: 5017226 (1991-05-01), Kulisz
Hirz Suzan J.
Weeks Bruce W.
Bowers Jr. Charles L.
Griswold Gary L.
Kirn Walter N.
Litman Mark A.
Minnesota Mining and Manufacturing Company
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