engleski

Meeting the Quality Requirements in the Flexographic Plate Making Process

Adjustment of the photopolymer printing plates to match qualitative requirements includes consideration of basic parameters in the digital printing plate making process which are necessary for achieving high-quality imprints in flexography. Flexography is widely used in the packaging printing. It is characterized by a flexible and elastic printing plate and a printing ink of low viscosity which enables printing on different types of printing substrates. The aim of this research is to expand the knowledge about the photopolymer printing plates and the processing procedure which has high influence on the quality level of the plates. The flexibility and deformations of the printing plate which occur in the printing process are considered to be the technological limitations of this technique. Therefore, defining and explaining deviations in the printing process is necessary for achieving higher quality prints. The deviations induced by the printing process are detected by observing reproduction of the halftone values. This paper presents a model for adjustment of the photopolymer printing plates making process to achieve optimal reproduction results. The results have shown that creation of a closed reproduction system which includes the printing plate, the printing system and the printing substrate is a necessity for meeting high quality demands.

photopolymer printing plate ; CtP workflow ; digital file adjustment procedure

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