Klanjac Gubić, Marina (2012) Određivanje tolerancije definiranih varijabilnih parametara kod malih odstupanja u fleksotisku. Master's thesis - Graduate Programme. Grafički fakutet. [Mentor: Zjakić, Igor].
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Abstract
Uobičajen način analize kvalitete tiska je procjena rastertonskih vrijednosti i njihovog prirasta te određivanje numeričkih vrijednosti psihofizičkih karakteristika boja otiska (mjerenje CIE L*a*b* vrijednosti boja, sivog balansa, prihvaćanja boje...) pomoću mjernih uređaja kao što su denzitometar i spektrofotometar. Međutim, utvrđivanje raspona reproduciranih rastertonskih vrijednosti i karakteristika boje nije dovoljno za procjenu kvalitete tiska. Postoji nekoliko čimbenika koji nisu direktno povezani s rastertonskim vrijednostima i bojom, a ipak značajno utječu na kvalitetu tiska. Ti se faktori odnose izravno na kvalitetu osnovnih mikroelemenata svake otisnute slike – na karakteristike linija, slovnih znakova i rasterskih elemenata koje nije jednostavno identificirani. Navedeni će parametri u ovom radu biti opisani i kvantificirani putem tolerancijskih intervala izmjerenih na otiscima dobivenim fleksografskim tiskom bojilima koje suše pod utjecajem UV zračenja i bojilima na bazi vode, a pomoću različitih digitalnih termalnih tiskovnih formi.
| Item Type: | Master's thesis - Graduate Programme |
|---|---|
| Mentor name: | Zjakić, Igor |
| Defence date: | 20 September 2012 |
| Abstract in english: | A common way of printed image quality assessment is an estimation of tonal value and it's increase (dot gain) and a determination of numerical values of psychophysical color characteristics (measurement of CIE L*a*b* values, grey balance, trapping, etc.) using measuring devices such as densitometer and spectrophotometer. However, determining of the printed tonal range and color characteristics is not enough to assess the quality of print. There are several factors that are not directly associated with tonal value increase and color, but still significantly affect the print quality. Those factors are directly related to the fundamental microelements of which every printed image consists - lines, characters and minimal dot quality that are not easily identified. In this paper, mentioned parameters will be described and quantified by means of their tolerance range measured on the prints obtained by using a flexographic technique with printing inks that dry under the influence of UV light and waterbased inks, and by using different digital thermal printing plates. |
| Uncontrolled Keywords: | fleksotisak, digitalna tiskovna forma, minimalni rasterski element, linija, slovni znak |
| Keywords in english: | flexography, digital printing plate, minimal dot, line, character |
| Subjects: | TECHNICAL SCIENCES > Graphic Technology |
| Institution: | Grafički fakutet |
| City: | Zagreb |
| Number of Pages: | 63 |
| Callnumber: | zja 2012 kla |
| Inventory number: | DB157 |
| Depositing User: | Dora Budić |
| Status: | Unpublished |
| Date Deposited: | 25 Apr 2014 11:47 |
| Last Modified: | 25 Apr 2014 11:47 |
| URI: | http://eprints.grf.unizg.hr/id/eprint/1846 |
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