Utjecaj aditiva na kvalitetu otiska u offsetnom tisku

Šutić, Marko (2007) Utjecaj aditiva na kvalitetu otiska u offsetnom tisku. Diploma work - Pre-Bologna programme. Grafički fakultet. [Mentor: Bolanča, Stanislav].

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Abstract

U ofsetnoj tehnici tiska koja je danas najzastupljenija tehnika tiskanja, kvaliteta otiska značajno ovisi o karakteristikama otopine za vlaženje. Zbog toga, ispitivanja u ovom radu temelje se na utjecaju koncentracije aditiva, 2- propanola u otopini za vlaženje. Otisci korišteni u ovom radu otisnuti su tako da im se postepeno povećavao udio alkohola u otopini za vlaženje do pojave toniranja. Ispitivani otisci tiskani su klasičnim bojilima na dvije vrste tiskovnim podloga: sjajnom papiru za umjetnički tisak i premaznom ofsetnom papiru. Usporedbom otiska otisnutih s različitim udjelima 2-propanola u otopini za vlaženje, ustanovljena je zavisnost kvalitete otiska o sastavu otopine za vlaženje. Usporedba otiska provedena je mjerenjem prirasta rastertonskih vrijednosti i tristimulusnih vrijednosti. Rezultati mjerenja prikazani su krivuljama realne reprodukcije te trodomenzionalnim prikazom gamuta ispitivanih otisaka. Također, sekundarni cilj ovog rada je prikazati prednosti standardizacije i optimizacije ofsetnog tiska uvođenjem Colour Managementa sustava i izrade digitalnih probnih otisaka korištnjem ICC profila.

Item Type:	Diploma work - Pre-Bologna programme
Mentor name:	Bolanča, Stanislav
Defence date:	2007
Abstract in english:	In offset printing, which is todays major printing technology, the behaviour of dampening solution has an significant influence on quality of print. Therefore, research in this work is based on effects of additives, isopropyl alcohol on damening solution. Tested prints were done by printing with gradually increasing portion of isopropyl alcohol in dampening solution, until scumming. Print samples were printed with classical inks on two printing surface: glossy fine art paper and coated offset paper. With comparation of prints printed with different addition of alcohol in dampening solution, correlations between quality of print and composition of dampening solution are established. Comparasion of prints was done by dot gain mesuring and mesuring of tristimulus values. Mesuring results are presented by print characteristic curves and three-dimensional LAB gamut view. Also, secondary purpose of this work is to show advantages of standardization and optimization by introducing Colour Management system in offset printing and by making digital proofs using ICC profiles.
Uncontrolled Keywords:	ofsetni tisak, otopina za vlaženje, aditivi – 2 propanol, prirast rastertonskih vrijednosti, gamut, ICC profili, digitalni probni otisak
Keywords in english:	offset printing, dampening solution, additives – isopropyl alcohol, dot gain, gamut, ICC profiles, digital proof
Subjects:	TECHNICAL SCIENCES > Graphic Technology
Institution:	Grafički fakultet
City:	Zagreb
Number of Pages:	57
Callnumber:	bols 2007 šut
Inventory number:	D572
Status:	Unpublished
Date Deposited:	15 Nov 2013 21:32
Last Modified:	22 May 2014 10:45
URI:	http://eprints.grf.unizg.hr/id/eprint/541

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