Prihvatljivost tolerancije tiska miješanih boja

Bjelobaba, Mirjana (2013) Prihvatljivost tolerancije tiska miješanih boja. Diploma work - Pre-Bologna programme. Grafički fakutet. [Mentor: Zjakić, Igor].

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Abstract

Mjerenje boja standardni je dio suvremenog postupka proizvodnje grafičkih proizvoda. Mjerenjem se određuju matematičke karakteristike boja, a na taj način omogućuje se točno definiranje određene boje te ostvarivanje, kao i potvrda očekivanih rezultata. U ovom radu uspoređivane su standardne vrijednosti boje i vrijednosti otisnute boje kako bi se utvrdila odstupanja od referentnih vrijednosti, odnosno polje tolerancije. Boje su otisnute klasičnom ofsetnom tehnikom tiska. Za grafički prikaz izmjerenih vrijednosti korišten je trodimenzionalni prostor boja CIE L*a*b* pomoću kojeg je dobivena razlika u bojama ΔE*. Budući da ΔE* predstavlja samo određeni broj za mjerenje odstupanja boje, potrebno je utvrditi prihvatljive granice tolerancije. U savršenom podudaranju boja vrijednost ΔE* iznosila bi 0, no u realnim okolnostima to je gotovo nemoguće postići jer brojni faktori utječu na devijaciju boje te je u ovom radu utvrđeno koliko vrijednosti mogu izlaziti izvan propisanih granica tolerancije da bi još uvijek bile prihvatljive.

Item Type:	Diploma work - Pre-Bologna programme
Mentor name:	Zjakić, Igor
Defence date:	19 September 2013
Abstract in english:	Color measurement is a standard part of the modern process of the manufacturing of graphic products. Measurement is used to determine the mathematical characteristics of color, and thus enables the exact definition of a certain color, and achievement, as well as confirmation of the expected results. In this study, standard color values and the values of printed colors were compared to determine the deviations from the reference value, or field tolerance. Colors were printed in the classical offset printing technique. For a graphical representation of the measured values three-dimensional color space CIE L*a*b* was used, which was obtained by the difference in colors ΔE*. Since ΔE* represents only a certain number of color deviation, it is necessary to determine the acceptable limits of tolerance. The value of a perfect ΔE* match would be 0, but in a real-life situation, this value is almost impossible to achieve, because many factors affect the color deviation, and in this paper it was shown how values can go beyond the prescribed limits of tolerance, and still be acceptable.
Uncontrolled Keywords:	mjerenje boje, ofset, kvaliteta otiska
Keywords in english:	measuring color, offset, quality of printed products
Subjects:	TECHNICAL SCIENCES > Graphic Technology
Institution:	Grafički fakutet
City:	Zagreb
Number of Pages:	47
Callnumber:	zja 2013 bje
Inventory number:	D1047
Depositing User:	Dora Budić
Status:	Unpublished
Date Deposited:	17 Apr 2014 12:57
Last Modified:	17 Apr 2014 12:57
URI:	http://eprints.grf.unizg.hr/id/eprint/1647

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