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
1983-08-31
1985-12-24
Kittle, John E.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430 5, 430272, 430327, 430270, G03C 516, G03C 168, G03F 900
Patent
active
045606390
ABSTRACT:
Higher resolution photoimages are produced in the photopolymer arts by intimate contact of a photoimage bearing surface of a phototransparency phototool and the surface of a liquid photopolymer layer to expose the photopolymer layer to curing radiation in that relationship. When phototools are to be reused over and over in production they are subject to wear and corresponding loss of resolution. Also the cured and hardened photopolymer tends to stick to the phototool surface. This invention resolves these problems by forming an image through a thin polyolefin film that wets with the liquid photopolymer and does not stick to such photopolymer cured and hardened thereon. Any scratching from wear, etc. causes little loss of resolution because of the through-the-film image, formed by exposing a dye and solvent solution to the porous film through an image forming stencil pattern.
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Brown Laurence R.
Hamilton Cynthia
Kittle John E.
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