Naslov
Stability of thermochromic printing inks

Autori
Friškovec, Mojca ; Kulčar, Rahela ; Klanjšek Gunde, Marta

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

Izvornik
Proceedings-The Fifth International Symposium GRID 2010 / Novaković, Dragoljub - Novi Sad : Tampograf, 2010, 33-38

ISBN
978-86-7892-294-7

Skup
5th International Symposium on Graphic Engineering and Design

Mjesto i datum
Novi Sad, Srbija, 11.11.2010. - 12.11.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
thermochromic printing inks; stability; laboratory weathering; xenon arc; lightfastness; resistance to high temperatures; total colour contrast

Sažetak
Thermochromic (TC) printing inks change their colour regarding the change in temperature. One of the most frequently used TC material in printing inks are leuco dyes. This TC composite usually consists of a colour former (leuco dye), a colour developer and a solvent, protected in polymer capsules. The colour of TC prints is dynamic, it is not just temperature dependend, but also depends on thermal history. The effect is described by colour hysteresis. Leuco dye-based TC inks are known for their short pot life, poor lightfastness and low resistivity to high temperatures and many chemicals. The effect of UV light and high temperatures on dynamic colour properties was tested. The effect was evaluated by total colour difference between fully coloured states of exposed and unexposed samples, by the total colour contrast between fully coloured and totally discoloured states of the samples and by the sample discolouration ability.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA