Process for producing relief copies in light hardenable material

Details Process for producing relief copies in light hardenable material Process for producing relief copies in light hardenable material

1982-05-07

1984-05-08

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Use of sound or nondigital compressive force

430141, 430145, 430306, 430309, 430325, 430329, 430330, 430347, 134 1, 134 10, G03F 702, G03F 708, G03F 726

Patent

active

044475101

ABSTRACT:
A process for producing relief copies wherein the light-hardenable layer of a light-hardenable copying material, which contains a photopolymerizable mixture, a photodimerizable polymeric compound or a diazonium salt polycondensation product, is exposed to a light image, the exposed layer is subjected to a brief ultrasonic treatment, and the unexposed areas of the layer are thereafter washed away by means of a developer. As a result of the ultrasonic treatment, shorter exposure times may be used and better in-depth hardening of the layer may be achieved.

REFERENCES:
patent: 3661660 (1972-05-01), Wessells et al.
patent: 3849135 (1974-11-01), Karlikouski et al.
patent: 4131483 (1978-12-01), Iwahashi et al.
Grant, "Hackh's Chemical Dictionary", 4th ed., McGraw-Hill Book Co., 1969, p. 699.
Chemical Abstracts, vol. 73, #115049x, 1970.
Research Disclosure #18345, 7/79.

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