Devijacija prirasta RTV kod tiska malih naklada

master's thesis

• Author: Mirela Širić
• Mentor: Igor Zjakić (mentor)
• Committee member: Igor Zjakić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2009-4-00, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

Zahtjevi tržišta i velika konkurentnost, te komercijalna grafička proizvodnja sve više diktiraju trend za što kvalitetnijim proizvodom, a razvoj grafičke tehnologije posljednjih desetljeća to i omogućuje. Danas je ofsetna tehnika tiska zbog svoje velike zastupljenosti najstandardiziranija, a tehnologija toliko razvijena da se grafički proizvod može dovesti do visokog stupnje kvalitete.

Istraživanje devijacije prirasta rastertonskih vrijednosti provedeno je na arcima uzetima iz naklade od 3000 otisaka u točno definiranim razmacima. Cilj istraživanja je uočiti devijaciju prirasta, odnosno odstupanje prirasta od srednjih vrijednosti koji su uzrok pada kvalitete tiska po načelima i zahtjevima standardizacije kvalitete. Prirast rastertonskih vrijednosti svojim veličinama daje mogućnost preciznog očitovanja i održavanje nivoa kvalitete kroz cijelu nakladu. Stalnim poboljšanjem tiskarskog sustava treba težiti prema vrijednostima koje prikazuju manje vrijednosti prirasta RTV. Dobivene krivulje prirasta RTV za sve četiri boje tokom naklade uspoređene su s prirastom RTV unutar B kategorije prirasta , koja je ovdje ujedno i preporuka prirasta RTV ukoliko želimo dobiti kvalitetnu reprodukciju.

Dobiveni rezultati prirasta na 50 % RTV koristili su se za izračun devijacije prirasta na 50 % RTV, odnosno za odstupanje od srednjih vrijednosti u apsolutnom iznosu. Rezultati devijacije prirasta također su prikazani u dijagramima radi vizualne usporedbe, te donošenja zaključaka o kvaliteti ispitivanih otisaka.

Abstract (english)

Market demands and fierce competition, as well as commercial graphic production define more and more the trend for best quality products, and the development of the graphic technology in the last decade allows it. Today is the offset print technology the most standardized one due to its huge representation and the technology is so highly developed that graphic products can be made with great quality.

The research about the dot gain deviation of the raster tone values has been conducted on sheets taken from 3000 prints edition in precisely defined intervals. The goal of the research was to note the dot gain deviation, i.e. the deviation of the dot gain from the average values which are the cause for the deterioration of print quality according to the principles and demands of quality standardization. Dot gain of the raster tone values, as well as the dimensions of it, provide for precise scan and quality level maintenance throughout the whole edition. The constant upgrading of the print system should be inclined at the values that show lower values of the raster tone dot gain. The obtained raster tone dot gain curves for all four colours during the edition are compared to raster tone dot gain values within the B category dot gain, which is also a recommendation here for the raster tone dot gain if we are to gain reproduction of high quality. The obtained dot gain results of 50% raster tone were used for the analyis of dot gain deviation on 50% raster tone, i.e. for the deviation of the average values in the absolute amount. Dot gain deviation results are also shown in diagrams for the purpose of visual comparison and concluding about the quality of prints in question.

• Keywords: devijacija; prirast rastertonskih vrijednosti; ofsetna tehnika tiska; B kategorija prirasta RTV
• Keywords (english): deviation; dot gain of the raster tone values; offset print technology; B category dot gain
• Language: croatian
• URN:NBN: urn:nbn:hr:216:320632
• 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: Closed access
• Created on: 2024-04-17 10:25:06