Naslov
Colorimetric Changes Caused by UV Varnishing

Autori
Car, Ivana ; Majnarić, Igor ; Lozo, Branka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 8th Conference on Information and Graphic Arts Technology / Urbas, Raša ; Pušnik, Nace - Ljubljana : University of Ljubljana Faculty of Natural Sciences and Engineering Department of Textiles, Graphic Arts and Design Chair of Information and Graphic Arts Technology, 2018, 37-41

ISBN
978-961-6900-24-9

Skup
8th Conference on Information and Graphic Arts Technology

Mjesto i datum
Ljubljana, Slovenija, 07.06.2018. - 08.06.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
color change, UV varnish, half-ton value, dyed papers.

Sažetak
This paper examines the influence of UV LED varnish on color change of varnished substrates. Industrially manufactured dyed papers in 8 different colors (green, red, blue, cyan, yellow, brown, black and light yellow) were UV varnished on Roland VersaUV LEC-300 printing machine in UV LED Inkjet printing technique. Each sample of dyed papers was varnished in four different surface coverage in half-ton values of 20%, 40%, 60% and 80%. Varnished papers were submitted to colorimetric analyses using X-Rite eXact spectrophotometer. From the obtained L*a*b* values, the difference in coloration (ΔE2000) was calculated by CIE Lab ΔE2000 equation. The results of the colorimetric analyses were presented in the form of three-dimensional CIE Lab diagrams showing the color changes in brightness and chromaticity. Color change ΔE2000< 1 is considered visually unnoticeable in contrast to color change ΔE2000> 1 that is visually noticeable. Above the color change, some samples showed significant change in chromaticity.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA