Process for producing equidensity images using photohardenable m

Details Process for producing equidensity images using photohardenable m Process for producing equidensity images using photohardenable m

1984-09-06

1986-06-17

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Plural exposure steps

430917, 430326, 430328, G03C 500, G03C 516

Patent

active

045956510

ABSTRACT:
Process for photographic recording of selective areas of an original image, e.g., as equidensities and/or contour images, on a photohardenable material, e.g., (a) nongaseous monomer compound, (b) organic photoinitiator or photoinitiator/sensitizer system and (c) photoinhibitor activatable by ultraviolet radiation, which comprises in either order (A) exposing the photohardenable layer with desensitizing radiation, and (B) photohardening the layer with photohardening radiatiion, exposures (A) and (B) being imagewise exposures with the proviso that if exposure (B) is the first imagewise exposure, a nonimagewise final exposure is utilized.

REFERENCES:
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patent: 3901705 (1975-08-01), Pazos
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patent: 4269933 (1981-05-01), Pazos
patent: 4477556 (1984-10-01), Dueber et al.
A. S. H. Craeybeckx, compiler, "2496 continuous tone", Elsevier's Dictionary of Photography in Three Languages: English, French and German, Elsevier Publishing Company, New York, N.Y., 1965, p. 100.
Polygraph Worterbuch Der Graphischen Industrie in Sechs Sprachen, Polygraph Verlag GmbH, Frankfurt Am Main, 1967, p. 142, 2986 "Halbton" and 5115 "Rasterpunkt".
Dr. Ernst Lau and Dr. Wolfgang Krug, Equidensitometry, Focal Press, London and New York, p. 9.
The Focal Encyclopedia of Photography, McGraw-Hill Book Company, New York, N.Y., p. 345.

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