Parametri formiranja tiskovnih elemenata fotopolimerne tiskovne forme

master's thesis

• Author: Juraj Baškarad
• Mentor: Sanja Mahović Poljaček (mentor)
• Committee member: Mirela Rožić (član povjerenstva)
• Committee member: Sanja Mahović Poljaček (član povjerenstva)
• Committee member: Dubravko Banić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2013-9-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

Polazna točka ovog rada su neizraĎene fotopolimerne CtP tiskovne forme za fleksotisak. Fotopolimerne tiskovne forme su predoslojene LAMS (eng. Laser Ablation Mask) slojem koji ima ulogu predloška kod osvjetljavanja. Nakon straţnje ekspozicije, LAMS sloj se uklanja laserskom ablacijom samo na mjestima na kojima fotopolimerna tiskovna forma treba biti osvijetljena. Motiv generiran laserskom ablacijom je kontrolni klin s poljima različitih pokrivenosti tiskovnim elementima. Pomoću laserske ablacije LAMS sloja definira se i linijatura tiskovne forme koja je ključna za eksperimentalni dio. Ostali koraci izrade fotopolimerne tiskovne forme za fleksotisak provode se po standardiziranim uvjetima. U radu će se izraĎene tiskovne forme, na kojima će se provoditi mjerenja, dovesti u korelaciju s površinom koja se otvara na LAMS sloju za pojedinu rastertonsku vrijednost te oblikom tiskovnog elementa. Teorijski dio rada detaljnije objašnjava digitalni postupak izrade fotopolimernih tiskovnih formi za fleksotisak te karakteristike materijala potrebnih za taj postupak. TakoĎer se objašnjava i teorijska podloga eksperimentalnog dijela koja zaokruţuje shvaćanje cjelokupnog postupka i cilj istraţivanja koje se provodi u ovom radu.

Istraţivanjem se došlo do zaključka da se primjenom viših stupnjeva bump up krivulja kod izrade tiskovnih formi za fleksotisak pravilno formiraju tiskovni elementi na niskim rastertonskim područjima.

Abstract (english)

Starting point of this theses are unfinished photopolymer CtP printing forms for flexo printing. Photopolymer printing forms are pre-layered with LAMS (Laser Ablation Mask) layer which has the role of a mask in the process of exposure. Upon pre-exposure, LAMS layer is removed by laser ablation only at the points where photopolymer printing form needs to be exposed. The motif generated by laser ablation is the control target containing fields of differing halftone values. Using the laser ablation of the LAMS layer, the liniature of the printing form, which is crucial for the experimental faze, is also defined. Remaining steps to develop the photopolymer printing forms are implemented according to standard conditions. In this thesis, the printing forms upon which the measuring is undertaken are brought to correlation with the opened surface of the LAMS layer for specific halftone value as well as with the shape of the printing element itself. The theoretic part of this thesis offers a detailed explanation of the procedure of development of the photopolymer printing forms for flexo printing as well as the characteristics of the materials needed for this procedure. Theoretical background for the experimental part is also explained and this completes the notion of the whole procedure as well as the goal of the research conducted in this theses.

Research has brought forth the conclusion that using higher degrees of bump up curves in development of printing forms for flexo printing, the printing elements on the lower halftone values are formed more regularly.

• Keywords: fleksotisak; tiskovni element; LAMS; raster; tiskovna forma
• Keywords (english): flexo printing; printing element; LAMS; raster; printing form
• Language: croatian
• URN:NBN: urn:nbn:hr:216:062038
• 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: Open access
• Created on: 2024-04-18 19:06:19