INVESTIGATION OF THE QUALITY PARAMETERS OF SPECIAL EFFECT INKS
The aim of the study was to determine the influence of the kind of paper and the ink film thickness on the observed optical effect of the ink. The study involved different types of printing substrates, i.e.: gloss coated, matt coated, uncoated and cardboard and different ink film thicknesses. The tests were carried out in offset technology with the use of IGT AIC 2-5 laboratory device. The MA98 X-Rite multi-angle spectrophotometer was used to evaluate the laboratory prints. It was proved that all the parameters tested in the research have a great influence on the achieved optical effect. It is assumed that the obtained test results may find application in practice.