Marić, Daniela (2021) Utjecaj parametara rezolucije na kvalitetu visokoproduktivnih fotografskih strojeva. Master's thesis - Graduate Programme. Grafički fakultet. [Mentor: Majnarić, Igor].
![[thumbnail of DB1000_Marić_Daniela.pdf]](http://eprints.grf.unizg.hr/style/images/fileicons/application_pdf.png) |
PDF
DB1000_Marić_Daniela.pdf Download (5MB) |
Abstract
U posljednje vrijeme na tržištu tiskarskih strojeva povećao se broj visokoproduktivnih elektrofotografskih strojeva. Samim time brzina otiskivanja postaje veća od 120 str/min A4 formata. Ova karakteristika omogućena je povećanjem dimenzija osnovnih komponenata u elektrofotografskoj tiskarskoj jedinici (fotoreceptori, razvijački valjci, kućište tonera). Promjena je nastala i u praškastom toneru koji u sebi sadržava nove čestice razvijača. Cilj ovoga rada je ispitati kvalitetu visokoproduktivnog elektrofotografskog stroja Konica Minolta AccurioPress C12000 čija je brzina otiskivanja 120 A4 kolornih stranica u minuti, te utvrditi kako promjena linijature od 100, 190, 270 lpi utječe na realizaciju CMYK kolornog otiska. To je omogućeno korištenjem RIP-a Fiery IC-318. Korištena tiskovna podloga u eksperimentu bila je ofsetni papir Fedrigoni Splendorgel Extra White gramature 160 g/m2. Veličina otisnute naklade bila je 60 primjeraka od kojih je 12 nasumično izabrano. Kao ciljana referenca uzeta je Fogra 52 (Ugra/Fogra Media Wedge klin od 74 polja). Dobiveni CMYK otisci su analizirani kolorimetrijskom metodom (X-Rite eXact Advanced) uz određivanje kolornih promjena CIELAB, ΔE, ΔL, ΔC nastalih međusobnom komparacijom. Dodatno je ispitana i ujednačenost otisnute naklade pri čemu se je detaljno praćen testni interval unutar 60 sekundi (1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 i 60 otisak). Za grafički prikaz rezultata korišten je program Origin Pro 8.5. Rezultati prikazuju da su kolorne oscilacije manje pri tisku s FM rasterom te linijaturi od 190 lpi AM rastera. Linijatura od 100 lpi-a se pokazala kao najlošiji izbor. Oscilacije kroz vremenski period od 60 sekundi su znatno veće u drugom testnom intervalu odnosno od 35. do 60. sekunde.
| Item Type: | Master's thesis - Graduate Programme |
|---|---|
| Mentor name: | Majnarić, Igor |
| Thesis Committee: | Donevski, Davor and Majnarić, Igor and Cigula, Tomislav |
| Defence date: | 24 September 2021 |
| Abstract in english: | Recently, the number of high-performance electrophotographic machines with a speed of more than 120 ppm A4 format has increased on the market of printing machines. This is made possible by improving the basic components in the electrophotographic printing unit (photoreceptors, developer rollers and toner cartridges for the machines. There has also been a change in the type of toner powder, which uses less energy and has new developer particles. The aim of this paper is to examine the quality of a high-performance Konica Minolta Accuriopress C12000 electrophotographic machine with a print speed of 120 ppm A4 color pages and to determine how a change in screening at 100, 190, 270 lpi affects the realization of CMYK color prints. This was made possible using RIP Fiery IC-318. The printing substrate used in the experiment was standard Splendorgel offset paper with a grammage of 160 g / m2, and therefore the Fogra 52 (Ugra/Fogra Media Wedge of 74 fields) was taken as a reference. The obtained CMYK prints was analyzed using the colorimetric method (X-Rite eXact Advanced) with the determination of color changes of CIELAB, ΔE, ΔL, ΔC caused by mutual comparison. The uniformity of the printed edition will be additionally examined, and the test interval of 60 seconds will be monitored in detail (1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60 prints). Origin Pro 8.5 was used to graphically display the results The results show that the color oscillations are lowest when printed with an FM raster and with 190 lpi AM raster screening. The most inferior results are visible with a 100 lpi raster screening. Oscillations over a period of 60 seconds are significantly higher in the second test interval ie,, l from 35 to 60 seconds in the primary run. |
| Uncontrolled Keywords: | visokoproduktivna elektrofotografija, kvaliteta otiska, CIELAB, ΔE2000, Fogra 52, ujednačenost naklade |
| Keywords in english: | high-productivity electrophotography, print quality, CIELAB, ΔE2000, Fogra 52, uniformity of volume |
| Subjects: | TECHNICAL SCIENCES > Graphic Technology |
| Institution: | Grafički fakultet |
| City: | Zagreb |
| Number of Pages: | 96 |
| Callnumber: | MAJ 2021 MAR |
| Inventory number: | DB1000 |
| Depositing User: | Nina Jelača |
| Status: | Unpublished |
| Date Deposited: | 11 Dec 2023 10:06 |
| Last Modified: | 11 Dec 2023 10:06 |
| URI: | http://eprints.grf.unizg.hr/id/eprint/3587 |
Actions (login required)
 |
View Item |
