engleski

Colorimetric properties of reversible thermochromic ink on different papers

The colorimetric properties of one, leuco dye-based thermochromic (TC) ink at 270C activation temperature on four different paper samples were studied. The paper samples are: filter paper, bulky paper, recycled paper and synthetic paper. The each sample was heated from the 15 0C to the 600C and then cooled back to the 150C. The colour of the ink was dependent on temperature as well as the thermal history of the sample, which gives rise to colour hysteresis. Four characteristic temperatures were determined from L*(T) hysteresis and they are the same for TC ink print on all examined papers. The differences in colour that occur on the TC print during the process of heating and cooling at the same temperature, are the highest in the case of TC print on filter paper.

thermochromic ink ; papers ; characteristic temperatures ; colour difference

Ovaj rad je u sklopu SuZ, financijske potpore istraživanju: “Utjecaj interakcija tiskarska boja - tiskovna podloga na klasično i organsko recikliranje” (voditeljica: dr.sc. Mirela Rožić, red.prof.).