Blizanci bojila za sigurnosni tisak u infracrvenoj kartografiji

doktorski rad

• Naslov (engleski): Twin dyes for security printing in infrared mapping
• Autor: Maja Matas
• Mentor: Vilko Žiljak (mentor)
• Član povjerenstva: Klaudio Pap (član povjerenstva)
• Član povjerenstva: Anayath Rajendrakumar (član povjerenstva)
• Član povjerenstva: Damir Modrić (član povjerenstva)
• Član povjerenstva: Marin Milković (član povjerenstva)
• Član povjerenstva: Nikola Mrvac (član povjerenstva)
• Ustanova koja je dodijelila akademski / stručni stupanj: Sveučilište u Zagrebu; Grafički fakultet; Zagreb
• Datum i država obrane: 2017-12-8, Hrvatska
• Znanstveno / umjetničko područje, polje i grana: TEHNIČKE ZNANOSTI; Grafička tehnologija
• Univerzalna decimalna klasifikacija (UDC): 655 - Grafička industrija. Tiskarstvo. Izdavaštvo. Knjižarstvo

Sažetak (engleski)

The aim of this research is an extension of the printing technology with the purpose of

concealing security graphics within documents and securities. A new way of making twin

dyes is developed which allows targeted setting of double information for the visual and

infrared spectrum. The dissertation brings new security solutions for multicolor prints by

introducing twin dyes to test digital printing and offset printing of large editions. New

standards for print models created through the development of duality printing reproduction

of visual and infrared spectrum with spot dyes and their simulation with process dyes are set.

Two sets of twin dyes have the same color tone and identical L*a*b* (lightness coloropponent dimensions / brightness, chromaticity coordinates) values, but are made from

different recipes. Defined are twin dyes through process dyes CMYK (cyan, magenta, yellow,

key) for the visual and infrared spectrum, minimizing ΔE (numerical value of the difference

of color tones) for the digital and offset print. Infrared features are set for dyes for

authentication and the possibility of marking graphic elements in extended visual space. The

method of mixing twin spot dyes with process offset ink is presented, for printing large

editions. For digital test printing experimental methods are defined with twin dyes at X0 and

X25 through the CMYKIRDT (CMYK infrared / digital printing) separation, for the set L*a*b*

values for each color tone and the default ΔE value of the digital print. Graphics using the

newly created scale of twin dyes are designed. The reproductions carry two pieces of

information, one visible to the naked eye, and the other with ZRGB cameras at 1000nm. The

desired target level of participation of the Z security infrared components of twin dyes is set.

In this paper, standardization of the process of graphic reproduction of protected documents

in the infrared region is determinated. The method of the design of graphic products with the

introduction of security printing through infrared twin dyes is extended. It has been shown

that the use of dyes in multicolor twin spot printing and experimental digital printing can

prove the validity of the document and ensure authors' rights. The process of developing and

applying twin dyes sets protection through all phases of prepress, print and further usage is

presented.

• Ključne riječi (engleski): twin dyes; infrared design; security print; hiding; spot dyes; digital print
• Jezik: hrvatski
• URN:NBN: urn:nbn:hr:216:249293
• Studijski program: Naziv: Grafičko inženjerstvo i oblikovanje grafičkih proizvoda; Smjer: Tehničko-tehnološki; Vrsta studija: sveučilišni; Stupanj studija: doktorski studij; Akademski / stručni naziv: doktor/doktorica znanosti u području tehničkih znanosti (dr. sc. tech.)
• Vrsta resursa: Tekst
• Način izrade datoteke: Izvorno digitalna
• Prava pristupa: Otvoreni pristup
• Datum i vrijeme pohrane: 2024-04-24 22:02:30