Influence of UVC treatment on sheetfed offset print quality

A4 Konferenspublikationer


Interna författare/redaktörer


Publikationens författare: Roger Bollström, Anni Määttänen, Petri Ihalainen, Jouko Peltonen, Martti Toivakka
Redaktörer: Nils Enlund
Förlagsort: Darmstadt
Publiceringsår: 2010
Förläggare: iarigai - The International Association of Research Organizations for the Information, Media and Graphic Arts Industries
Moderpublikationens namn: Advances in printing and media technology : proceedings of the 37th International research conference of IARIGAI
Volym: 37
ISBN: 9783981270426


Abstrakt

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.

Senast uppdaterad 2020-30-03 vid 06:10