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Relationship between ink film topography and print gloss in offset prints on coated surfaces
RISE, STFI-Packforsk.
RISE, STFI-Packforsk.
2008 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 23, no 2, 156-163 p.Article in journal (Refereed) Published
Abstract [en]

Model coatings with different micro roughness but similar and low macro roughness were prepared and laboratory printed. The coating micro roughness strongly affected the print gloss at low inking levels, corresponding to one or two full tone layers. The effect of coating micro roughness decreased with ink amount and was insignificant at inking levels of 3-4 g/m2, which corresponds roughly to three to four full tone layers. A strong correlation between ink film micro roughness and print gloss was established. Remaining ink filament patterns that had survived the ink levelling process were observed with a fast-setting coating but not with a slow-setting coating. The amplitude of the filaments was a few tenths of a urn only and was strongly dependent on ink amount. The filaments were observed in wavelength bands between 15 and 125 ÎŒm, which can be regarded as a sub-macro roughness region. Their impact on print gloss was estimated on some 6 gloss units.

Place, publisher, year, edition, pages
2008. Vol. 23, no 2, 156-163 p.
Keyword [en]
AFM, Atomic Force Microscopy, Coated paper, Coating, Ink, Print gloss, Printing, Roughness, Scanning Electron Microscopy, SEM
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:ri:diva-29689ScopusID: 2-s2.0-48849095627OAI: oai:DiVA.org:ri-29689DiVA: diva2:1098501
Note

cited By 8

Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2017-05-24Bibliographically approved

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