Politehnika i dizajn, Vol. 6 No. 4, 2018.
Izvorni znanstveni članak
https://doi.org/10.19279/TVZ.PD.2018-6-4-04
HIDDEN INFORMATION IN TWINS COLORANTS ON PACKAGING
Petar Miljković
; Sveučilište Sjever, Varaždin, Hrvatska
Mensura Kudumović
; University of Sarajevo, Faculty of Educational Sciences, Bosnia and Herzegovina
Denis Jurečić
; Sveučilište u Zagrebu, Grafički fakultet, Zagreb, Hrvatska
Aleksandra Bernašek Petrinec
; Tehničko veleučilište u Zagrebu, Zagreb, Hrvatska
Sažetak
The mixing of process colorants is conducted
on cardboard with an inkjet plotter. In the
article recipes are published for colorant
compositions which are presented in pairs
of equal colors in the visual spectrum.
Every color in the family of colors with dual
properties has the same difference ΔZ in the
near infrared spectrum. The difference in the
absorption of light at 900 nanometers is 0.14.
In visual spectrum, the twins of two colorants
are defined as colors with the value of their
difference ΔE less than 3.
Solutions using twins of colorants in two
spectra have been experimentally tested in
the print on drug packaging. Quality control
of the readability of the text is conducted
with new infrared mini-cameras connected to
a tablet.
Ključne riječi
drug packaging; twins of color and colorants; near infrared spectroscopy; hidden information; safety print
Hrčak ID:
218193
URI
Datum izdavanja:
10.12.2018.
Posjeta: 931 *