System and method for exposing a digital polymer plate

Details System and method for exposing a digital polymer plate System and method for exposing a digital polymer plate

G - Physics

03

C

G03C 8/52 (2006.01)

Patent

CA 2698270

An improved process for producing flexographic printing plates using a digital workflow is described. After creating an in-situ digital mask over the photopolymerizable layer, the photopolymerizable layer is exposed to actinic radiation through the mask layer in a reduced oxygen environment. After subsequent development, the resulting relief printing form is composed of flat topped dots with crisp edges and steep bevel angles that can be used to print directly on corrugated materials.

La présente invention concerne un procédé amélioré pour produire des plaques d'impression flexographiques en utilisant un flux de travail numérique. Après création d'un masque numérique in situ sur la couche photopolymérisable, la couche photopolymérisable est exposée à un rayonnement actinique à travers la couche de masque dans un environnement réduit en oxygène. Après un développement ultérieur, la forme d'impression en relief résultante est composée de points à sommet plat dotés de bords vifs et d'angles en biseau tranché qui peuvent être utilisés pour imprimer directement sur des matériaux ondulés.

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