Utjecaj postavki Ink-jet jedinice za lakiranje na realizaciju metalik efekata

master's thesis

• Author: Matko Pintar
• Mentor: Igor Majnarić (mentor)
• Committee member: Tomislav Cigula (član povjerenstva)
• Committee member: Igor Majnarić (član povjerenstva)
• Committee member: Dubravko Banić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2020-7-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

U grafičkoj tehnologiji digitalni tisak svojom cijenom i efikasnošću pokušava sustići

konvencionalne tiskarske tehnike. Inkjet tehnika danas je jedna od vodećih tehnika

digitalnog tiska, ponajprije zbog kvalitete otisaka i brzine tiska. Otiscima ostvarenim u

digitalnim tehnikama dodatnu vrijednost daju mogućnost personalizacije i različiti

postupci dorađivanja. Jedan od cijenom dostupnih efekata je reprodukcija metalik tonova

koja se primjenjuje za potrebe visoko kvalitetnih aplikacija. Moguća realizacija takvog

specijalnog efekata temelji se na parcijalnom lakiranju pomoću Inkjet glava te naknadnog

termalnog nanašanja metalik folije. Takvi postupci se danas mogu izvoditi na hibridnim

strojevima koji prvo nanašaju UV sušeći lak da bi se nakon toga ostvarilo nanašanje

(vezivanje) metalik folije.

U ovom radu testirat će se efekt prihvaćanja laka i folije nanašanjem laka direktno na mat

tiskarsku podlogu (karton za umjetnički tisak, gramature 300 g/m2). Korištena metalik

folija bila je Murata Gold. Za potrebe eksperimenta korišten je tiskarski stroj MGI JET

Varnish 3DS s ugrađenih 5 Konica Minolta Inkjet glava tipa KM1024iLHE-30 s dvije

UV sušeće lampe. Njihovim djelovanjem ispitat će se kako različita količina nanesenog

UV sušećeg laka utječe na adheziju metalik folije te kako produkcijska brzina tiskarskog

stroja JET Varnish 3Ds utječe na istu. Tijekom eksperimenta softverski je mijenjan je

nanos UV laka u modifikaciju 6 karakterističnih debljina (21 µm, 29 µm, 36 µm, 43 µm,

51 µm te 58 µm ) uz konstantnu temperaturu transfera folije od 105 OC. Dodatno je ispitan

i utjecaj brzine kretanja tiskovne podloge (0,300 m/s; 0,240 m/s; 0,159 m/s) uz konstantni

nanos UV laka. Ostvareni otisci analizirani su metodom slikovne analize u programu

ImageJ. Programom OriginPro izračunate su ostvarene devijacije, te su kreirani

karakteristični grafički prikazi. Cilj rada je analizirati kvalitetu otisaka nastalih

nanašanjem metalnih transfer folija, odnosno odrediti kvalitetu vektorskih ilustracija,

točkastih i linijskih elemenata. MGI JET Varnish 3DS najbolje reproducira sve elemente

pri nanosu laka od 21 µm i brzini otiskivanja od 0,240 m/s. nema potrebe za većim

nanosima laka jer neće dati bolji efekt. izuzetak su motivi sa velikom površinskom

pokrivenošću.

Abstract (english)

In graphic technology digital printing with its price and efficiency tries catch up with

conventional printing techniques. Inkjet technique today is one of the most used

techniques of digital printing, primarily due to the quality of prints and production speed.

The possibilities of personalization and various finishing procedures add value of digital

prints. One of the available reproduction effects is metallic tones applied for high quality

purposes. The possible realization of such a special effect of partial varnishing uses Inkjet

heads and subsequent thermal transfer application of metallic foil. Such processes today

can be performed by hybrid machines that first had a UV drying varnish to then achieve

the application (bonding) of the metallic foil.

In this paper, the effect of accepting varnish and foil by applying varnish directly on a

matte printing substrate (cardboard for artistic printing, grain 300 g / m2) will be tested.

The metallic foil used was Murata Gold. For the purposes of experimentation, the MGI

JET Varnish 3DS printing machine with a built-in 5 Konica Minolta Inkjet head type

KM1024iLHE-30 with two UV drying lamps is used. The amount of UV drying varnish

applied, affecting the adhesion of the metallic foil and how the production speed of the

JET Varnish 3Ds printing machine affects it will be tested. During the experimental, the

UV application was changed to modify 6 characteristic thicknesses (21 μm, 29 μm, 36

μm, 43 μm, 51 μm and 58 μm) with a constant foil transfer temperature of 105° C.

Additional testing and the influence of the speed of movement of printing media (0,300

m/s; 0,240 m/s; 0,159 m/s) with constant application of UV varnish. The realized prints

were analyzed by the method of image analysis in the ImageJ program. The OriginPro

program calculated realized deviations, which created characteristic graphic

representations. The aim of this paper was to analyze the quality of prints created by

applying metal transfer foils, by determining the quality of vector illustrations, dotted and

line elements. The MGI JET Varnish 3DS best reproduces all elements at a 21 µm varnish

application and a print speed of 0.240 m / s. There is no need for larger coats of varnish

because it will not give a better effect. The exception is motifs with large surface

coverage.

• Keywords: tisak folijom; UV lak; slikovna analiza; Konica Minolta ispisne glave KM1024iLHE
• Keywords (english): folio printing; UV varnish; image analysis; Konica Minolta printheads KM1024iLHE
• Language: croatian
• URN:NBN: urn:nbn:hr:216:944720
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-04-21 10:20:14