engleski

INFLUENCE OF THE UNCOATED PRINTING SUBSTRATES ON THE QUALITY OF THE MONOCHROMATIC DIGITAL PRINTING

It has been analyzed in this paper how the different types of uncoated papers can influence the quality of the monochromatic screen reproduction. In experiment actual monocromatic digital printing technologies were used: electrophotography, ink jet, digital screen printing, digital offset printing. The analysis comprised determination of dot gain (X-rite DTP 41) and determination of deviations of printed screen elements (Personal IAS). The analysis showed that qualitative monochromatic impression was obtained on Xerox 250. From the tonal point of view, harmonized screen reproduction was achieved on paper adapted for digital printing process. The round screen elements did not print as the smallest ones. The results show that smallest printed screen elements were obtained by Xerox 250 (Δ dArc=45, 3 μ m, Δ dNav=46, 6 μ m, Δ dArc=61, 8 μ m), while greatest printed elements were obtained on Riso (Δ dArc=172, 4 μ m, Δ dNav=154, 4μ m, Δ dArc=148, 9 μ m).

uncoated papers; monochromatic digital printing; dot gain; reproduction quality

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