Resin printing plate and preparation thereof

Details Resin printing plate and preparation thereof Resin printing plate and preparation thereof

1987-03-02

1988-04-19

Schilling, Richard L.

Stock material or miscellaneous articles

Structurally defined web or sheet

2505051, 350314, 350319, 428 40, 428 43, 428137, 430 5, G02B 522, G02B 500, A61F 1302, B32B 310

Patent

active

047388862

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: 3892900 (1975-07-01), Shima et al.
patent: 4337107 (1982-06-01), Eshleman
patent: 4600667 (1986-07-01), Uchida

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