Technical gazette, Vol. 23 No. 2, 2016.
Original scientific paper
https://doi.org/10.17559/TV-20140913151653
Study of usability of MacAdams ellipsoids in defining quality of printing dark colours
Igor Zjakić
orcid.org/0000-0002-1748-3550
; Faculty of Graphic Arts, Printing Department, Getaldiceva 2, 10000 Zagreb, Croatia
Eduard Galić
; Stega tisak d.o.o., Heinzelova 60/1, 10000 Zagreb, Croatia
Siniša Bogdanović
; Vice Dean for Academic Affairs, Agora University College, Trnjanska cesta 114, 10000 Zagreb, Croatia
Abstract
Various technologies of printing processes induce various deviations in the quality of the printed graphic product. Labels as graphic products are sensitive to such changes, since they represent the first contact between the consumer and the product the label is applied on. This research is oriented towards imprints dominated by dark colours, printed using the offset printing technique. Goal of this research is to, based on the spectrophotometric measuring and visual evaluation of the printing quality, construct the MacAdams ellipsoids and establish whether it is possible to establish the printing quality in the area of dark colours using MacAdams ellipsoids. After conducted research it was established that the ellipsoids cover various areas within CIE L*a*b* system. By correlating the stated results, it was concluded that while establishing the printing quality of the dark colour it is possible to use MacAdams ellipsoids.
Keywords
MacAdams ellipsoids; printing quality; dark colours; CIE LAB system; Delta E
Hrčak ID:
156846
URI
Publication date:
27.4.2016.
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