Production of Security Printing by Means of Themochromic and Conventional Offset Inks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895808" target="_blank" >RIV/00216275:25310/12:39895808 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Production of Security Printing by Means of Themochromic and Conventional Offset Inks
Original language description
The aim of this work was to create patterns consisting of two parts. One part is a selected combination of CMY frational area coverage with full overprint of thermochomic (TC) offset ink and second part is a computed CMY simulation to match the first part in colour appearance. As first, different binary combinations of C, M, Y were printed with overprint of TC ink with full area coverage. The patches were measured by spectrophotometer to obtain reflectance spectra and consequent colorimetric parameters.To be able to simulate the overprints with TC ink just by CMY combination, simple colorimetric Neugebauer model, simple spectral Neugebaur model, and also their Yule-Nielsen modifications were used. By iteration techniques, fractional area coverage of CMY simulations was obtained. In second step, security patterns consisting of CMY combination with TC ink overprint and their computed simulation were printed and evaluated in terms of colour difference. For the study coated and uncoated p
Czech name
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Czech description
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Project
<a href="/en/project/MEB091102" target="_blank" >MEB091102: New thermochromic composite systems for smart labels and security printing applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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