Influence of UVC treatment on sheetfed offset print quality

Roger Bollström, Anni Määttänen, Petri Ihalainen, Jouko Peltonen, Martti Toivakka

    Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

    Abstract

    The influence of using UVC irradiation as a post treatment method on pigment coated papers was studied. The germicidal wavelength (lmax = 254 nm) is known for breaking chemical bonds in organic material and has commonly been used for cleaning of surfaces. Pigment coated paper was treated under UVC irradiation and the influence on roughness, coating structure and wettability was analyzed. No change in roughness could be observed but wettability of water could be increased which indicates an increased polarity. Offset printability regarding print density, gloss, picking and ink setting was further studied as a function of different treatment parameters. In addition to changes in ink setting, a reduced picking tendency on low surface strength papers could be observed. The change in surface wetting is believed to arise from organic materials such as dispersing agents on the outermost surface being degraded by the UVC irradiation.
    Original languageUndefined/Unknown
    Title of host publicationAdvances in printing and media technology : proceedings of the 37th International research conference of IARIGAI
    EditorsNils Enlund
    Publisheriarigai - The International Association of Research Organizations for the Information, Media and Graphic Arts Industries
    Pages
    ISBN (Print)9783981270426
    Publication statusPublished - 2010
    MoE publication typeA4 Article in a conference publication
    EventAdvances in printing and media technology - 37th international research conference of IARIGAI
    Duration: 12 Sep 201015 Sep 2010

    Conference

    ConferenceAdvances in printing and media technology
    Period12/09/1015/09/10

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