Preparation of printing plate by pattern exposing both sides of

Details Preparation of printing plate by pattern exposing both sides of Preparation of printing plate by pattern exposing both sides of

1985-01-11

1986-07-15

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Registration or layout process other than color proofing

430 5, 430306, 430325, 430328, G03F 900, G03F 726

Patent

active

046006672

ABSTRACT:
A printing plate consisting of a base portion, a mount portion and a relief portion made of a liquid resin which is sensitive to and curable by irradiated activating rays, the plate being prepared by use of a masking sheet formed with a transmitting pattern having a contour corresponding to and slightly larger than the pattern of a negative film, a semi-transmitting pattern positioned outside the transmitting pattern and having a large contour for transmitting irradiated activating rays upon attenuation, and a blocking surface positioned outside the semi-transmitting pattern and having an effect to block the activating rays to an extent not to cure the liquid resin layer.

REFERENCES:
patent: 3663222 (1972-05-01), Akamatsu et al.

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