Process and apparatus for producing a photopolymer plate having

Details Process and apparatus for producing a photopolymer plate having Process and apparatus for producing a photopolymer plate having

1976-03-29

1978-05-02

Braun, Fred L.

Photocopying

Contact printing

Machine

96 36, 355 85, 355132, G03B 2730, G03B 2702

Patent

active

040871827

ABSTRACT:
Process and apparatus for producing a photopolymer plate having relief images thereon. Successive portions of a continuous length of a protective film material are travelled in a horizontal elongated plane defined by a pair of parallel and spaced guide rollers. A layer of liquid photosensitive material is applied to a length of the horizontal web of the protective film material. A length of backing material is then laminated onto the upper surface of the layer to form an assembly. The assembly is moved by the protective film material into a relief exposure station for the exposure of the lower surface of the layer through an image-bearing transparency and the protective film material to an actinic radiation. The laminated portion of the backing material is separated from the remaining continuous web of the backing material. The image-bearing transparency is fed to the relief exposure station by a continuous length of another film material. After exposure, the protective film material is peeled off from the lower surface of the exposed layer, which is then delivered to a washing-out section wherein the unhardened non-exposed portions of the layer are washed out to form relief images on the backing material. Major components of the apparatus are plurality of rollers for driving and/or guiding the protective film material, backing material and transparency-conveying film material. The apparatus is thus simplified in construction.

REFERENCES:
patent: 3120790 (1964-02-01), Carlson et al.
patent: 3848998 (1974-11-01), Yonekura et al.
patent: 3958142 (1976-05-01), Seitz
patent: 3971691 (1976-07-01), Cairns
patent: 3981583 (1976-09-01), Tsuchida et al.

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