Polytechnic and design, Vol. 11 No. 3, 2023.
Professional paper
https://doi.org/10.19279/TVZ.PD.2023-11-3-07
POSSIBILITY OF REALIZATION OF GOLD TONES WITH ELECTROPHOTOGRAPHIC POWDER TONERS
Igor Majnarić
orcid.org/0000-0002-4447-8140
; University of Zagreb Faculty of Graphic Arts, Getaldićeva 2, Zagreb, Croatia
Petra Zeljković
; University of Zagreb Faculty of Graphic Arts, Getaldićeva 2, Zagreb, Croatia
Dean Valdec
orcid.org/0000-0001-6897-8601
; University North, Department of Media Design, Trg dr. Žarka Dolinara 1, Koprivnica, Croatia
Abstract
Digital printing technologies are increasingly present in the printing industry. In the past decade, the electrophotography printing process only used like CMYK and BW printing machines. Today it is possible to realize special effects (additional colors like white, gold, silver, fluorescent CMY, and clear). The prints created with gold electrophotographic toner look more visually noticeable, which can be attributed to the pronounced metallic gloss (reflection). In this paper, the possibility of realizing metallic shades (GOLD) printed in coverage with 10%, 20%, 40%, 80%, 100% of RTV was investigated, using a new generation of EA powder toner for the Xerox Versant 180 Press printing machine. The influence of two types of round print element types (AM frequency and FM frequency screening) was additionally examined. To check the usability of the achieved metallic effects (golden tones), the same motive was printed with a two-color printing machine Heidelberg GTO 52 with the use of printing ink Huber Alchemy PANTONE 877C by Germany producer MHM Holding GmbH. A standard paper printing paper (Maxi Gloss 170 g / m2) was used for testing. Colorimetric comparison of electrophotography and offset printing was performed on all realized prints with the determination of CIEL*a*b* colorimetric value (x-rite Exact) and calculation of the colorimetric color difference CIE LAB DE2000, DL, DC (Origin 8.5).
Keywords
gold printing ink; electrophotography; litography offset printing; CIE LAB DE2000
Hrčak ID:
311528
URI
Publication date:
24.11.2023.
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