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Stručni rad

https://doi.org/10.25027/agj2017.28.v29i3.161

The influence of printing substrate on colorimetric properties of thermochromic offset prints

Marina Vukoje orcid id orcid.org/0000-0002-1558-6900 ; Sveučilište u Zagrebu Grafički fakultet, Zagreb, Hrvatska
Renato Glibo ; Sveučilište u Zagrebu Grafički fakultet, Zagreb, Hrvatska
Rahela Kulčar orcid id orcid.org/0000-0003-3599-9806 ; Sveučilište u Zagrebu Grafički fakultet, Zagreb, Hrvatska
Mirela Rožić ; Sveučilište u Zagrebu Grafički fakultet, Zagreb, Hrvatska


Puni tekst: engleski pdf 1.976 Kb

str. 7-13

preuzimanja: 424

citiraj


Sažetak

This paper investigates the colorimetric properties of reversible thermochromic offset printing ink on different paper substrates. Reversible thermochromic (TC) printing ink is printed by offset printing on four different printing substrates. Colorimetric measurements are performed by measuring diffuse reflection by determining uniform measurable physical size in the CIELAB colour space of the examined sample at temperatures ranging from 35°C to 75°C during heating and at the same temperatures up to 20°C. As the colour of the TC prints depends on the temperature, which results in colour hysteresis, it is noted that the colour hysteresis is affected by the printing substrate. The activation temperature given by the producer (63°C), is above the obtained temperatures, for print on filter paper 61,3°C, for print on synthetic paper 61,5°C, for print on bulky paper 60,9°C, with the highest deviation in the case of print on recycled paper (59,4°C). The results of total colour difference of samples measured between heating and cooling at the temperature well below the final chromic temperature and the CIEDE2000 total colour difference between the samples in the heated and cooled state as a function of temperature showed that the highest colour difference as obtained in TC print on the filter paper.

Ključne riječi

thermochromic ink; colorimetric properties; printing substrate; colour hysteresis

Hrčak ID:

227353

URI

https://hrcak.srce.hr/227353

Datum izdavanja:

5.11.2019.

Posjeta: 995 *