Dye sensitized photographic imaging system

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430914, 430915, 430916, 522 25, 522 26, 522 27, 522 28, 522 31, G03C 168

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048595721

ABSTRACT:
A photographic imaging system is disclosed comprised of a hardenable organic component containing ethylenic unsaturation sites and an initiator system for ethylenic addition. The initiator system is comprised of an electron acceptor activator, an electron donor activator, and, acting as a photosensitizer, a dye capable of absorbing imaging radiation. The dye has a reduction potential related to that of the electron acceptor activator and an oxidation potential related to that of the electron donor activator to permit each to release a free radical upon excitation of the photosensitizer by exposure to actinic radiation.

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Volman et al., Advances in Photochemistry, vol. 13, in the chapter titled "Dye Sensitized Photopolymerization" by D. F. Eaton, pp. 427 to 488, John Wiley & Sons (1986).
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