engleski

The non-uniformity of prints analysed on paper substrate with barley fibres

Non-uniformity of prints by ISO 13660 is defined in small-scale as graininess and large-scale as mottling. With these two parameters unevenness of ink on the printing substrate could be described. Non-uniformity of prints is most important factor regarding visual impression of printed graphic products. Usually is resulted from the surface characteristics of the substrate, the setting of the printing machines and the characteristics of the printing ink. In this study, the focus was put on the adhesion between the paper with variable content of barley fibres and two different type of printing inks (coldset offset ink and UV inkjet ink). Based on conducted analysis it could be concluded that more uniform reproduction of solid tone could be achieved by conventional printing then by digitally printing technique.

barley fibres, coldest offset printing, inkjet printing, graininess, mottling

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