Symposium on Graphic Arts
Stálý URI pro tuto komunituhttps://hdl.handle.net/10195/54172
The international Symposium on Graphic Arts brings together researches, specialists and students to share knowledge in printing technologies, materials and processes.
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Konferenční objekt Otevřený přístup published Analysis of changes in paper cutting forces during the cutting cycle in single-knife guillotine(Univerzita Pardubice, 2013) Rusin, Agnieszka; Petriaszwili, GeorgijPaper presents the results of changes in the three components of cutting forces of paper stacks cutting during the cutting cycle in single-knife guillotine. The changes of the three components of cutting force at different stages of cutting cycle were analyzed.Konferenční objekt Otevřený přístup published Typeface persona: a review study(Univerzita Pardubice, 2013) Puškarević, Irma; Nedeljković, Uroš; Pintjer, IvanPractitioners and scholarly researchers agree that different typefaces have different personas. Document design, which is largely dependent on the use of different typefaces, stems from the content of the verbal text and the purpose of the text is expressed through typography. In an age of electronic information set in microcosmic structure, possibilities we have come to face present freedom to modify and manipulate visual attributes of a document with software packages. This practice has given the opportunity to many untrained people to become publishers and active users of type and often times this practice is directed without understanding the principles of document design and the very notion of the intended perception of type’s persona. The relevance of typeface persona is an important aspect of technical or any other document that has its intended audience. Therefore, by choosing the appropriate typeface, communicators can determine the visual tone and character of the text. This paper outlines the visual rhetoric and consequently the role of typography as a part of that rhetoric. The literature review concentrates on typeface persona in theory, practice and research, exploring the idea of ‘’atmosphere’’, connotative meaning and semantic quality of type. The paper concludes with a discussion of the demand in the field of practitioners to classify typefaces according to their persona.Konferenční objekt Otevřený přístup published Influence of the pad printing plate‘ printing element depth on the quality of the printed product(Univerzita Pardubice, 2013) Pavlović, Živko; Dedijer, Sandra; Pál, Magdolna; Cigula, TomislavOne of the biggest challenges in mass printing is repeatability and stability of the ink transfer from the printing plate onto the printing substrate. The pad printing is characterised by indirect ink transfer from a gravure printing plate. Beside area of the printing elements, on the pad printing plate one should take into account their depth as it is a factor which directly influences the printing ink quantity, i.e. overall quality of the printed product. The photopolymer pad printing plate production includes two exposures with UV irradiation, first to make difference between printing and nonprinting areas and second to form partitions (walls) in the printing elements. The duration of the second exposure directly influences the final depth of the printing elements. The aim of this paper is to determine influence of the second exposure on the depth of the printing elements, consequently on the reproduction of the pad printing plate elements. For this purpose four pad printing plate samples with various coverage tone value fields will be made by variation of the second exposure duration. Results have shown that second exposure duration significantly influences the printing elements size and therefore should be defined precisely in order to form printing elements of desired depth.Konferenční objekt Otevřený přístup published Influence of high grades paper properties on adhesive binding strength in a humid condition(Univerzita Pardubice, 2013) Pasanec Preprotić, Suzana; Jakovljević, MajaClass book, pocket book, annual book, proceedings book and note book are the reusable paperback products. That is a good reason researching adhesive binding quality when soft bound book is stored on humid conditions. The benefit of paperback form is an easy way of handling the text block during the reading. Also the paperback has mostly required reading for customers’ different ages for its low-price and practicality. Uncoated paper mostly takes place in making of text block form including perfect binding technique with HM adhesive. If adhesive binding quality is sufficient, the text block damages almost certainly. This research focuses on understanding of high grades paper properties because adhesive binding strength is only available at paper bindability. The text block volume has consisted of a number of loose leaves and hold together at spine edge with adhesive. Paper bindability can be observed in every aspect paper adherent features, the bounded layers increase in strength if paper properties are suitable for adhesive binding. The hypothesis is that paper property would indicate a reduction in the adhesive binding strength in humid condition. Paperbacks were exposed to moisture-low heat ageing over period of time (ISO 9142). The static tensile stress method (loose leaf pull-test) has been in use. The adhesive joint strength results are compared with a rating of adhesive strength according to FOGRA Nr.71006 guidelines for page pull-test.Konferenční objekt Otevřený přístup published Influence of the scanning resolution on image segmentation accuracy for an objective fold cracking evaluation(Univerzita Pardubice, 2013) Pál, Magdolna; Novaković, Dragoljub; Pavlović, Živko; Dedijer, SandraThe fold cracking resistance of coated papers has become an important field of investigation, due to the constant production cost optimization in paper industry. Although the fold cracking of coated papers is an important phenomenon, there is no standardized method for quantitative evaluation of the amount of cracking, just a few, newly proposed methods. These methods are based on digital image analysis, with different sample preparation, image pre- and post-processing and evaluation techniques. One of the differences is the resolution of digitalized samples. This paper presents an analysis of the effects of chosen digitalisation resolution of paper samples on the image analysing accuracy for an objective fold cracking evaluation. In order to get more insight, a detailed investigation has been conducted to overview the advantages and disadvantages of higher resolution of scanned samples in the objective fold cracking evaluation process.Konferenční objekt Otevřený přístup published Pharmaceutical packaging and ID cards with printed antennas of RFID tags(Univerzita Pardubice, 2013) Kavčič, Urška; Đokić, Miloje; Maček, Marijan; Radonić, Vasa; Muck, TadejaThe integration of RFID tags in different applications is important in order to gain greater functionality in products. Upon packaging, box tracking in logistics or in the supply chain can easily be achieved [1]. High manufacturing costs have led to the search for alternative manufacturing methods at an ultra-low cost and various printing processes have been considered such as inkjet, gravure, flexo, offset and screen printing. Currently, investigations are focused on the use of these printing technologies for the mass production of RFID directly on different printing materials such as papers, cardboards and foils [2–12]. This paper is an upgrade of our preliminary research [13] focused on antenna design and optimization of printing conditions. The analysis of the readability of UHF RFID tags, which were printed on real pharmaceutical packaging (of tablets) and on ID cards with printed and multi-layered laminated plastic cards were done. Two different antenna designs were printed. The first one on a packaging box and the second one on a foil layer which was then laminated with seven different foil layers. For printing thermal drying silver conductive printing ink was used. The NXP plastic strap chips were integrated with printed antennas using conductive glue. We found that printed antennas of UHF RFID tags and inline chip integration can swap the RFID tag label on packaging and RFID tag inlays in ID cards with printed ones. Preliminary results are promising, but to achieve better performance significant improvements have to be made in the near future.Konferenční objekt Otevřený přístup published Analysis of change in surface roughness of samples printed using screen printing with variable mesh type(Univerzita Pardubice, 2013) Kašiković, Nemanja; Vladić, Gojko; Milošević, Rastko; Novaković, Dragoljub; Stančić, MladenThis paper presents results of experiment conducted in order to determine influence of mesh density on surface roughness of textile materials printed with screen printing technology. Experiment was conducted to prove hypothesis that printing with different mesh density of the screen will cause changes in surface roughness parameters. Density of the screen mesh is usually used for determining volume of the ink transfer to the substrate. Volume of the transfer ink has a significant influence on changes in surface roughness of substrates. Surface structures of the textile substrates are filled with ink thus causing changes in surface roughness. For these experiment three different types of screen printing mesh were used with variable mesh density, 46, 54, as well as 90 threads per centimeter. Printing substrates used in the experiment was textile material composed of 100 % cotton. Inks used for printing were cyan, magenta, yellow, black, and green. All together 15 samples were made and their surface roughness was measured using TR 200 measuring unit. Mean value of 10 measurements is presented and further analyzed. The results showed a correlation between the type of screen printing mesh used and changes in surface roughness.Konferenční objekt Otevřený přístup published Influence of surface properties of ink jet papers on print sharpness(Univerzita Pardubice, 2013) Jurič, Ivana; Karlović, Igor; Tomić, IvanaIn printing the final print quality depends on the quality of the digital image as well as the properties of the printing system and the paper used. One of the most widely used digital printing technology is ink jet where the ink is ejected directly onto a substrate from a jet device driven by an electronic signal. Most ink jet inks have a low viscosity and a low surface tension, which put high demands on the surface properties of papers. The aim of this study was to investigate the influence of surface properties of commercially available papers suitable for ink jet printing on print sharpness. We used two high glossy, one glossy, one semi-gloss and two matte papers. For the assessment of the surface properties, we measured surface roughness with the portable Roughness Tester TR 200. We also measured surface gloss with QIP Glossmaster. For the characterization of print sharpness we used image analysis method. Print sharpness was estimated according to the modulation transfer function (MTF). Results obtained in this paper showed that the surface properties of paper are in direct relation with print sharpness.Konferenční objekt Otevřený přístup published Study of printability of new types of coated printing paper made from 100% recycled fibres(Univerzita Pardubice, 2013) Jakucewicz, Stefan; Panák, Ján; Dreszer, Karol HenrykThe aim of this work was to evaluate the printability characteristics of the three types of coated paper made from recycled fibres in offset printing and to compare them with high-quality wood-free coated paper. Printing from test form was made on the sheet-fed offset B2 machine format. Inking was adjusted according to ISO 12647-2:2004. On the printed sheets were evaluated –ΔEab primary and secondary colours to the reference values, D100 CMYK inks, tonal value increase ΔAT, trapping and reproduction of fine elements. Based on these results we can say that the studied papers are in terms of printability exactly the same as high quality standard wood-free coated paper.Konferenční objekt Otevřený přístup published Structural, optical and thermal properties of benzofluoran-based thermochromic composite(Univerzita Pardubice, 2013) Hajzeri, Metka; Vatič, Nika; Panák, Ondrej; Kaplanová, Marie; Klanjšek Gunde, MartaThermochromic composites, consisting of leuco dye, colour developer and organic solvent indicate reversible thermochromism, with colouration in the solid state and discoloration in the molten state. These functional materials, the so-called smart materials, are of considerable interest in graphic art technology for applications such as temperature sensors, security markers, thermal printing, cutlery and clothing. Thermochromic composites of 6‘- (diethylamino)-1‘-2‘-benzofluoran (BF) dye, 2,2-bis(4-hydroxypheniyl) propane (BPA) developer and 1-octadecanol (OD) solvent were investigated in this work. Composites with four different molar ratios of BPA were analysed. The chemical structure, thermal and optical properties of samples were analysed by UV-VIS and FTIR spectroscopy, colorimetric measurements and differential scanning calorimetry. The applied methods enable to study the properties of the material below and above the phase-changes. Much interest was devoted to analyse how different molar ratio of developer influence on the structural, optical and thermal properties of the composites.
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