Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1986-11-21
1988-05-10
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430286, 430287, 430919, 430920, 522 25, G03C 172
Patent
active
047435313
ABSTRACT:
A photographic imaging system is disclosed comprised of an imaging dye or a precursor thereof, a hardenable organic component containing ethylenic unsaturation sites and capable of imagewise modulating mobility of the dye or dye precursor as a function of addition at the sites of ethylenic unsaturation, and coinitiators for ethylenic addition. The coinitiators include an azinium salt activator and a photosensitizer which is a dye exhibiting a reduction potential which in relation to that of said ionized azinium salt activator is at most 0.1 volt more positive, with the further proviso that, when the photosensitizer is a keto dye having its principal absorption peak at a wavelength shorter than 550 nm, it exhibits when excited by imaging radiation an intersystem crossing efficiency to a triplet state of less than 10 percent.
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Research Disclosure, vol. 200, Dec. 1980, Item 20036.
Specht, Martic, and Farid, "A New Class of Triplet Sensitizers", Tetrahedron, vol. 38, pp. 1203-1211, 1982.
Farid Samir Y.
Haley Neil F.
Moody Roger E.
Specht Donald P.
Brammer Jack P.
Eastman Kodak Company
Thomas Carl O.
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