Method of hardening photopolymeric printing material using warm

Details Method of hardening photopolymeric printing material using warm Method of hardening photopolymeric printing material using warm

1979-09-26

1981-04-28

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

101170, 427273, 430306, 430307, 430309, 430322, 430324, 430330, 430331, G03F 702, G03C 500, G03F 700

Patent

active

042647126

ABSTRACT:
Photopolymeric printing plates that have been imaged and etched are hardened by drying to remove surface moisture and are slowly and evenly heated while circulating warm air over the plate to prevent hot spots and remove vaporized material. Letter press type plates are heated up to 120.degree. C. to 150.degree. C., and intaglio type plates are heated to 200.degree. C. to 220.degree. C. Intaglio plates are also preferably coated with a thin layer of a fluorotelomer material before the heating is completed.

REFERENCES:
patent: 3512971 (1970-05-01), Floss et al.
patent: 3516828 (1970-06-01), Floss et al.
patent: 3586504 (1971-06-01), Coates et al.
patent: 3661660 (1972-05-01), Wessells et al.
patent: 4006270 (1977-02-01), Morgan
patent: 4124389 (1978-11-01), Hoornstra et al.
"Curing Photo Resist . . . ", Karp, Intern. Soc. Hybrid Microwave Symposium, Beverly Hills, Cal. 1970.

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