Method of producing plate making masks and film for forming mask

Details Method of producing plate making masks and film for forming mask Method of producing plate making masks and film for forming mask

1987-08-04

1989-03-28

Lesmes, George F.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

430 5, 430300, 430394, 1014631, G03C 500

Patent

active

048163821

ABSTRACT:
A method of producing plate machining masks in which a mask forming film having a support and a masking forming layer mostly transparent is put on a press-ready copy. Lines are cut through the mask forming layer in conformity to patterns observed therethrough on the press-ready copy. Encircled or encircling portions of the masks forming layer defined by the cut lines are peeled off. Either the mask forming layer has some color or reflectance properties and thus the remaining portions are used as a photographic mask over the press-ready copy or a paint is applied through the missing mask forming layer to the support and the remaining mask forming layer is removed to leave a paint-defined mask.

REFERENCES:
patent: 4334769 (1982-06-01), Fromson et al.
patent: 4351238 (1982-09-01), Harpold
patent: 4351685 (1982-09-01), Clark
patent: 4397261 (1983-08-01), Jones
patent: 4434198 (1984-02-01), Clark
patent: 4636438 (1987-01-01), Hudson et al.

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