engleski

Ink Trapping in Hybrid Printing Technology

In this paper the authors are comparing prints made with combination of offset and flexo inks used in hybrid printing technology. A good image reproduction is determined by appropriate trapping. Poor trapping means that superimposed inks are improperly laid down on the previously printed colours, causing poor colour balance and poor overall appearance. Hybrid press systems use combination of different printing units therefore it is possible to implement a flexo unit in an offset line and vice versa. Different printing units have advantages of their own and by combining them into one production line the quality of a print job can be increased. Flexo printing process uses low viscosity inks and offset printing process uses paste, viscous inks. According to that, the rheology and drying characteristics of each type of ink are different. The aim of this study was to investigate how two different types of inks would interact one with another when printed in different conditions.

Ink trapping; Hybrid printing; Flexo ink; Offset ink

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