Pintar, Matko (2020) Utjecaj postavki Ink-jet jedinice za lakiranje na realizaciju metalik efekata. Master's thesis - Graduate Programme. Grafički fakultet. [Mentor: Majnarić, Igor].
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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.
| Item Type: | Master's thesis - Graduate Programme |
|---|---|
| Mentor name: | Majnarić, Igor |
| Thesis Committee: | Cigula, Tomislav and Majnarić, Igor and Banić, Dubravko |
| Defence date: | 17 July 2020 |
| Abstract in 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. |
| Uncontrolled Keywords: | tisak folijom, UV lak, slikovna analiza, Konica Minolta ispisne glave KM1024iLHE |
| Keywords in english: | folio printing, UV varnish, image analysis, Konica Minolta printheads KM1024iLHE |
| Subjects: | TECHNICAL SCIENCES > Graphic Technology |
| Institution: | Grafički fakultet |
| City: | Zagreb |
| Number of Pages: | 108 |
| Callnumber: | MAJ 2020 PIN |
| Inventory number: | DB881 |
| Depositing User: | Nina Jelača |
| Status: | Unpublished |
| Date Deposited: | 10 Dec 2020 11:24 |
| Last Modified: | 10 Dec 2020 11:24 |
| URI: | http://eprints.grf.unizg.hr/id/eprint/3266 |
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