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Journal articles on the topic 'Intaglio printing'
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Son, Keunbada, Jung-Ho Lee, and Kyu-Bok Lee. "Comparison of Intaglio Surface Trueness of Interim Dental Crowns Fabricated with SLA 3D Printing, DLP 3D Printing, and Milling Technologies." Healthcare 9, no. 8 (August 3, 2021): 983. http://dx.doi.org/10.3390/healthcare9080983.
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This study aimed to evaluate the intaglio surface trueness of interim dental crowns fabricated with three 3-dimensional (3D) printing and milling technologies. Dental crown was designated and assigned as a computer-aided design (CAD) reference model (CRM). Interim dental crowns were fabricated based on CRM using two types of 3D printer technologies (stereolithography apparatus and digital light processing) and one type of milling machine (n = 15 per technology). The fabricated interim dental crowns were obtained via 3D modeling of the intaglio surface using a laboratory scanner and designated as CAD test models (CTMs). The alignment and 3D comparison of CRM and CTM were performed based on the intaglio surface using a 3D inspection software program (Geomagic Control X). Statistical analysis was validated using one-way analysis of variance and Tukey HSD test (α = 0.05). There were significant differences in intaglio surface trueness between the three different fabrication technologies, and high trueness values were observed in the milling group (p < 0.05). In the milling group, there was a significant difference in trueness according to the location of the intaglio surface (p < 0.001). In the manufacturing process of interim dental crowns, 3D printing technologies showed superior and uniform manufacturing accuracy than milling technology.
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Zahrawaan, Amy. "Tetra Pak Printing: Sebuah Model Pengolahan Sampah Berbasis Seni." Urban: Jurnal Seni Urban 6, no. 1 (April 13, 2022): 41–56. http://dx.doi.org/10.52969/jsu.v6i1.55.
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Garbage is often seen as something that cannot be reused and becomes a problem. On that basis, art can be an alternative to respond to these problems. This article will describe a review of the results of the analysis of the use of waste waste that can be an alternative resource in making works of art through the Tetra Pak Printing model using the intaglio technique. This research is reviewed using art-based research methods, namely research on a problem through an artistic approach. This research will specifically examine and show how the waste management model uses graphic art practices carried out by the Huru Hara Graphic artist group (GHH) in the 2020-2022 period through the Tetra Pak Printing model. Tetra Pak Printing uses Tetra Pak branded beverage packaging waste as the main material. The use of alternative media aims to replace or find media that can be easily accessed by the public and are more environmentally friendly. As a comparison, this paper also includes several examples of ecological-based art practices, in addition to the utilization of Tetra Pak packaging waste. The findings of the analysis show that the Tetra Pak Printing model can be an alternative model for the intaglio technique because it is easier, practical, and economical and can be reached by all levels of society. In addition, Tetra Pak Printing can be said to have been able to answer and be a solution to one of the ecological challenges through art, especially in terms of waste management in the community.Sampah sering dianggap sebagai sesuatu yang sudah tidak bisa didayagunakan kembali dan menjadi sebuah masalah. Atas dasar itu, kesenian dapat menjadi salah satu alternatif untuk menanggapi problematika tersebut. Artikel ini akan menguraikan tinjauan hasil analisis terhadap pemanfaatan limbah sampah yang dapat menjadi sumber daya alternatif dalam pembuatan karya seni melalui model Tetra Pak Printing menggunakan teknik intaglio. Penelitian ini ditinjau menggunakan metode riset berbasis seni, yakni penelitian terhadap suatu masalah melalui pendekatan artistik. Penelitian ini secara khusus akan mengkaji dan memperlihatkan bagaimana model pengelolaan limbah sampah menggunakan praktik seni grafis yang dilakukan oleh kelompok seniman Grafis Huru Hara (GHH) dalam kurun waktu 2020-2022 melalui model Tetra Pak Printing. Tetra Pak Printing menggunakan bahan limbah kemasan bekas minuman bermerek Tetra Pak sebagai material utama. Penggunaan media alternatif ini bertujuan untuk mengganti atau mencari media yang dapat dengan mudah diakses masyarakat dan lebih ramah lingkungan. Sebagai pembanding, dalam tulisan ini juga disertakan beberapa contoh praktik seni berbasis ekologi selain pemanfaatan limbah kemasan Tetra Pak. Temuan analisis memperlihatkan bahwa model Tetra Pak Printing dapat menjadi model alternatif teknik intaglio karena lebih mudah, praktis, dan ekonomis serta dapat dijangkau semua kalangan masyarakat. Di samping itu, Tetra Pak Printing dapat dikatakan telah mampu menjawab dan menjadi solusi salah satu tantangan ekologis melalui kesenian, khususnya dalam hal pengelolaan sampah di masyarakat.
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Smithson, Paula. "The Dark Side of Printmaking." IMPACT Printmaking Journal 4 (July 24, 2024): 8. http://dx.doi.org/10.54632/1507.impj19.
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This presentation examines print as a platform of multiple dimensions, providing an essential link between the traditions of handmade print and the use of new technologies. Exploring the potential of scale using photopolymer intaglio-type printing, using the material capabilities of the printed surface to connect what is viewed and experienced, I will reflect on my experience of this medium along with the research methods, practices, and technologies. More directly, this body of work considers ideas around the re-interpretation and repositioning of traditional printmaking skills and processes as part of a wider cross-disciplinary art practice. Large intaglio plates incorporate photopolymer technology to offer a view combining digital interpretation with the traditions of the hand-created mark and printed intaglio surface, resulting in a re-imagined vision linking digital aesthetics.
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Negru, Ioan Cristinel, Viorica Vasilache, Ion Sandu, Romeo Iulian Olariu, Petru Ovidiu Tanasa, Daniel Potolinca, and Irina Crina Anca Sandu. "Depth Profiling of Diffraction-based Security Features in Authentic and Counterfeit Banknotes." Materiale Plastice 54, no. 2 (June 30, 2017): 321–25. http://dx.doi.org/10.37358/mp.17.2.4843.
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High printing quality of banknotes and the variety of security features implemented in banknotes make a big difference between the genuine notes and high-quality forgeries. The counterfeiter cannot reproduce or imitate the printing quality and all security features embedded in every banknote, such as Optically Variable Ink, Optically Variable Diffractive Images, or intaglio printing. The present research focused on the examination of optically variable devices embedded on 50Îbanknotes. The altered banknotes were examined using different techniques.
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Vazquez, Abigail Trujillo, Susanne Klein, Xavi Aure Calvet, and Carinna Parraman. "Retrieving the ancient colours: artistic practice as a tool for heritage reconstruction." Color and Imaging Conference 2020, no. 28 (November 4, 2020): 282–87. http://dx.doi.org/10.2352/issn.2169-2629.2020.28.45.
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The frieze of the Palace of the stuccoes, dated between the 5 th and 6 th century BC, was a polychrome Maya relief discovered in the 1907 in Yucatán, Mexico. It was documented in watercolours and hand tinted photographs by Adela Breton. After years of exposure to the harsh environmental conditions of the Maya area, the colours and the stucco relief disappeared. The aim of the project is to develop a hybrid digital-analogue printing method for reconstructing the appearance of the original polychrome relief based on digitised hand-made records.<br/> A description of the process to produce full colour images combining digital and photomechanical printing is provided. Using photopolymer plates, an intaglio printing process has been used to produce colour images, whilst inverse relief plates have been created based on height maps to transfer a positive embossing on paper when applying pressure on a printing press. The influence of physical parameters related to the appearance is studied. Reflectance Transformation Imaging was carried out to record the colour and surface shape of the prints. Measurements of gloss were made on relief inkjet prints and intaglio prints on paper to compare the outcomes of commercial 2.5D print and the method proposed here.<br/> By modifying an analogue process with digital technology, it is possible to incorporate ancient materials to the printmaking process and therefore approach naturally the appearance of the original. On the other hand, incorporating imaging techniques and quality measurements enables to improve the quality in analogue printing techniques.
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Ceyhan, Umut, and S. J. S. Morris. "Meniscus growth during the wiping stage of intaglio (gravure) printing." Journal of Fluid Mechanics 807 (October 20, 2016): 419–40. http://dx.doi.org/10.1017/jfm.2016.618.
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During intaglio (gravure) printing, a blade wipes excess ink from the engraved plate with the object of leaving ink-filled cells defining the image to be printed. That objective is not completely attained. Capillarity draws some ink from the cell into a meniscus connecting the blade to the substrate, and the continuing motion of the engraved plate smears that ink over its surface. By examining the limit of vanishing capillary number ($Ca$, based on substrate speed), we reduce the problem of determining smear volume to one of hydrostatics. Using numerical solutions of the corresponding free-boundary problem for the Stokes equations of motion, we show that the hydrostatic theory provides an upper bound to smear volume for finite $Ca$. The theory explains why polishing to reduce the tip radius of the blade is an effective way to control smearing.
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Wale Oloidi, Igwe O Ewona, and David O Fakorede. "Design and development of a hybrid flat-bed relief printmaking machine – A review." World Journal of Advanced Research and Reviews 13, no. 1 (January 30, 2022): 552–55. http://dx.doi.org/10.30574/wjarr.2022.13.1.0068.
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Printmaking is an area of visual arts which deals with different processes in the multi-production of art works. The study discusses the various methodologies and processes involved in printmaking such as the linocut technique, etching, line engraving, aquatint and deep etching techniques otherwise known as intaglio. Of particular interest is the intaglio technique of printmaking, from design conceptualization to details of printing processes. Teaching and training in this field has metamorphosed into a fast digital lane. This has been difficult for the developing parts of the world to catch up. A hybrid flat-bed relief printmaking machine is proposed in this work. The machine employs both manual and electric motor technology for running the rolling parts. In this way a smooth transition is envisage from the conventional manual machine to the digital machines that are used in the industrialization of the textile industry.
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Charoenphol, Kanyakorn, and Chaimongkon Peampring. "An In Vitro Study of Intaglio Surface, Periphery/Palatal Seal Area, and Primary Bearing Area Adaptation of 3D-Printed Denture Base Manufactured in Various Build Angles." International Journal of Dentistry 2022 (November 17, 2022): 1–6. http://dx.doi.org/10.1155/2022/3824894.
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Statement of Problem. The influence of various building angles on the tissue surface adaptation of complete denture bases fabricated using digital light processing is lacking. Purpose. The objective of this research was to compare the adaptation in the overall intaglio surface, peripheral/posterior palatal seal area, and primary bearing area of the 3D-printed complete denture produced in 0, 45, and 90° build angles. Materials and Methods. A reference edentulous maxillary arch model was scanned to design virtual denture bases with computer-aided manufacturing (CAD) software with standard tessellation language (STL) files as output. Denture bases were fabricated by printing with a digital light processing (DLP) technique and divided into 3 groups according to build angles of 0°, 45°, and 90° (n = 10). To assess the adaptation, each STL file of the intaglio denture base was superimposed on the STL file of the reference model using surface-matching software. The adaptation was reported in root mean square error (RMSE) values and statically compared using one-way analyses of variance (ANOVA) and followed by the Turkey’s test for multiple comparisons with a significance level of α = 0.05. Results. Overall, intaglio surface adaptation of denture bases printed from three angles had no significant difference in adaption. In the peripheral/posterior palatal seal area, denture bases printed at a 90° build angle showed significantly better adaption than other groups. In the primary bearing area, denture bases printed at 45° and 90° had no significant difference in denture adaptation; however, they exhibited better denture base adaptation than the 0° group significantly. Conclusions. The build angle has no effect on adaptation in the overall intaglio surface area. The build angle of 90° provided the best adaptation in the peripheral/posterior palatal seal area. The 45° and 90° build angles provided better adaptation than 0° in the primary stress-bearing area.
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Brunvand, Erik, and Al Denyer. "Micro-Scale Printmaking on Silicon." Leonardo 44, no. 5 (October 2011): 392–400. http://dx.doi.org/10.1162/leon_a_00238.
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Printmaking is a fine art practice that encompasses a variety of media including intaglio, relief, lithography and screen-printing. In this collaborative research project the authors extend the traditional boundaries of printmaking to create editions of micro-scale prints on the surface of silicon integrated circuits using the layers of materials normally used for making transistors and electrical interconnections. The process by which the images are printed on the silicon surface is discussed, alongside some of the conceptual and technical issues related to creating printed images using this technology.
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Çakmak, Gülce, Alfonso Rodriguez Cuellar, Mustafa Borga Donmez, Martin Schimmel, Samir Abou-Ayash, Wei-En Lu, and Burak Yilmaz. "Effect of Printing Layer Thickness on the Trueness and Margin Quality of 3D-Printed Interim Dental Crowns." Applied Sciences 11, no. 19 (October 5, 2021): 9246. http://dx.doi.org/10.3390/app11199246.
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The information in the literature on the effect of printing layer thickness on interim 3D-printed crowns is limited. In the present study, the effect of layer thickness on the trueness and margin quality of 3D-printed composite resin crowns was investigated and compared with milled crowns. The crowns were printed in 3 different layer thicknesses (20, 50, and 100 μm) by using a hybrid resin based on acrylic esters with inorganic microfillers or milled from polymethylmethacrylate (PMMA) discs and digitized with an intraoral scanner (test scans). The compare tool of the 3D analysis software was used to superimpose the test scans and the computer-aided design file by using the manual alignment tool and to virtually separate the surfaces. Deviations at different surfaces on crowns were calculated by using root mean square (RMS). Margin quality of crowns was examined under a stereomicroscope and graded. The data were evaluated with one-way ANOVA and Tukey HSD tests. The layer thickness affected the trueness and margin quality of 3D-printed interim crowns. Milled crowns had higher trueness on intaglio and intaglio occlusal surfaces than 100 μm-layer thickness crowns. Milled crowns had the highest margin quality, while 20 μm and 100 μm layer thickness printed crowns had the lowest. The quality varied depending on the location of the margin.
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Kern, Marie, Ad Stijnman, Jana Müller, Yvonne Wiegand, and Irene Brückle. "From Wine to Print: Reconstruction of Frankfurt Black Pigment and Intaglio Printing Ink." Journal of Paper Conservation 21, no. 2 (April 2, 2020): 42–56. http://dx.doi.org/10.1080/18680860.2020.1832790.
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Kim, Seo Young, Jong Ik Kwon, Hyeon Hwa Song, Gwang Heon Lee, Won Seok Yu, Shi Li, Moon Kee Choi, and Jiwoong Yang. "Effects of the surface ligands of quantum dots on the intaglio transfer printing process." Applied Surface Science 610 (February 2023): 155579. http://dx.doi.org/10.1016/j.apsusc.2022.155579.
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Lamonova, Oksana. "Works by Andrii Levytskyi for the “Homage à trois” Project (Barcelona, Spain)." Folk art and ethnology, no. 1 (March 30, 2024): 50–56. http://dx.doi.org/10.15407/nte2024.01.050.
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Andrii Levytskyi is a well-known Kyivan graphic artist, a recognized master of gravure printing (intaglio). The artist has been participating regularly in the “Homage à trois” (Tribute to Three) project, which takes place in Barcelona (Spain) on the initiative of the Duana de les Arts – AIDA International Association – since 2021. Only masters of graphic art can participate in the project. It should commemorate three literary figures on the occasion of their birthday anniversaries, and the artists should choose at least two of the three proposed personalities. Intaglio 2021, satisfying the conditions of the project, at the same time continues seamlessly the themes and motifs peculiar to Andrii Levytskyi’s heritage in general. Poem about a Henna Tree (Jean Lafontaine) is somewhat unexpected and paradoxical, but naturally connected with the artist’s favourite images of trees. In the Player the themes of confrontation, game, rivalry are developed. They are arisen, in particular, in the intaglio Motus Animi Continuus (2021). Three works of 2022, made in the computer design technique, are distinguished by a bright and at the same time elegant color solution. The artist is inspired by themes of the theater and, widely, carnival culture (Molière’s Mask), Japanese art (IchiyōHiguchi’s Stream). The work for the anniversary of the legendary German romantic Novalis (Ask Baron: Is Religion the Opium of the Peoples) is especially unexpected. In 2023, Andrii Levytskyi has returned to the intaglio technique again and at the same time abandoned color. The works dedicated to Federico García Lorca (At Five O’clock in the Afternoon) and Wisława Szymborska, winner of the Nobel Prize (Cat in an Empty Apartment), are the artist’s reflections on the theme of death, while the work Dream. My Ántonia (based on the novel by Willa Cather) softens their tragical essence. The Ukrainian artist’s works dedicated to Molière, Novalis and Willa Cather have been nominated and awarded by the organizers of “Homage à trois”. Taking part in the international artistic projects, and even more so winning in them, Ukrainian artists contribute actively to the creation of a positive image of the state. After all, the culture of Ukraine consists not only of the historical heritage, but also of the works of modern masters.
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Ozcan, Arif, and Rasim Zulfigaroglu. "An investigation on printability of different solvent based inks by gravure printing onto various substrates." Journal of graphic engineering and design 11, no. 2 (December 2020): 31–36. http://dx.doi.org/10.24867/jged-2020-2-031.
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Gravure printing is an intaglio printing process, the image to be printed is engraved on the surface of the gravure cylinder, so that the image to be printed is embedded into the surface. The places engraved in the cylinder during printing are filled with ink, surplus of ink is stripped by a blade and separated for reuse. Print quality consistency and efficiency is high in gra-vure printing. It is also possible to print on different substrates. Ink systems, viscosity, surface properties of substrate material and dot structures on the gravure cylinder are the main factors that determine the print quality. Appropriate inks can be chosen depending on the material to be printed and finished product used area. Mostly solvent based inks are used. The aim of this study is to determine the solvent that can enable higher quality printing on different substrates, which are frequently used in the gravure printing system, and to investigate the conditions under which the ink-sub-strates interface relationship can be the best in terms of printability.In this study, IGT F1 laboratory type gravure testing machine was used. Polyethylene and polypropylene printable films are used as the substrate materials. Three different solvent-based inks are used, prepared with ethyl alcohol, ethyl acetate and isopropyl alcohol. Density, contact angle, surface energy and gloss properties of the printed materials were examined. The printability properties of selected substrates and inks have been determined.
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Du, Bin, Shi Sheng Zhou, and Nan Wang. "Modification of Printing Aluminum Powders by Wet Covering Method with Composite Surfactants." Advanced Materials Research 179-180 (January 2011): 596–601. http://dx.doi.org/10.4028/www.scientific.net/amr.179-180.596.
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Considering the fact of low gloss and masking power of aluminum powder, the aluminum powder is chemically modified by wet covering with eight kinds of single surfactants such as Oleic acid, Stearic acid, Sodium dodecyl sulfonate, Sodium stearate, Polyvinyl alcohol, Polyethylene glycol, Tween-80 and Emulsifier-OP in different proportions on the surface of aluminum powder and the gloss of aluminum paste printing ink concocted with the covered aluminum powder is tested. The results show that the gloss of the aluminum powder covered by one percent Polyvinyl alcohol increases most significant. In order to upgrade the gloss of the aluminum paste printing ink, an orthogonal experiment is carried out by choosing four surfactants such as Polyvinyl alcohol as influencing factors and their addition amounts as researched levels. The optimal surface modification formula is obtained based on the experiment. The dosage of surfactant is one percent of the aluminum powder, Sodium dodecyl sulfonate accounts for 25.00% of the total surfactant’s weight, Sodium stearate accounts for 37.50% of the total surfactant’s weight, Tween-80 accounts for 12.50% of the total surfactant and Polyvinyl alcohol accounts for 25.00% of the total surfactant’s weight. The prescription can concoct the commodity aluminum powder and passed 1200 mesh to the aluminum paste printing ink with commodity ink to satisfy the request of relief printing and intaglio printing. The gloss of the printed aluminum paste printing ink reaches 81.3.
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Sevostyanov, Ivan, and Maryna Pidlypna. "MODEL OF OPTIMIZATION OF FUNCTIONING OF MODERN POLYGRAPHIC AND PUBLISHING COMPLEXES." ENGINEERING, ENERGY, TRANSPORT AIC, no. 4(111) (December 18, 2020): 90–99. http://dx.doi.org/10.37128/2520-6168-2020-4-10.
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Analysis of known methods and modern equipment for printing and publishing (sheet rotary machines, roll machines, flat-printing and platen machines for flat impression block, relief, intaglio and digital printing) is conducted in this article. In a result of the analysis article authors have to make a conclusion, that most prospective equipment for automated printing and publishing complexes are: high-performance sheet and roll machines, in that number crucible, flatbed and rotary three-cylinder machines and also single-layer and multi-layer sectional machines, digital laser and inkjet machines. Authors propose a mathematical model of an automated optimization system of functioning of modern printing and publishing companies. In the model are used databases with information about orders (quantity, volumes, content, terms of orders fulfillment, admissible prime value and characteristics of quality of finished products), production capacities of printing and publishing enterprises of the region (destination, quantity and productivity of equipment, its technological capabilities, loading with other orders, service life), as well as additional data about value of transportation and storage of ready products, the possibility and feasibility of transferring orders to other enterprises and more. The elaborated model can be used as a basis for creation of a computer program for automated synthesis and analysis of functioning optimization of modern printing and publishing companies in the region to improve their efficiency, as well as for help customers of printing products in selection of optimal variants of orders fulfillment. The modeling results will allow to rationalize the utilization of enterprises capacity, to reduce the value of finished products, to ensure their proper quality, to avoid of disruptions during of peak periods of enterprises loading, to reduce the value of repair and maintenance of the complex equipment.
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WU, Rui, Yi-ming WANG, and Yu-hu WANG. "Research on temperature acquisition system of printing machine oven based on wireless Sensor network." Journal of Physics: Conference Series 2093, no. 1 (November 1, 2021): 012027. http://dx.doi.org/10.1088/1742-6596/2093/1/012027.
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Abstract Aiming at the problems such as limited transmission distance of traditional temperature data, complex wiring and aging line, ZigBee wireless network is introduced into the temperature acquisition system of the intaglio printing machine oven, which makes the whole system easy to operate and simple, and greatly improves the transmission distance of temperature signal. The composition of the temperature monitoring system and the hardware circuit of the ZigBee master node are described, including DC 5 V power supply circuit and USB interface power supply circuit, the connection circuit between the RADIO frequency board and the backboard, to realize the construction of the network and the wireless reception of temperature data. To realize the construction of the network and wireless reception of temperature data. It combines ZigBee wireless communication technology to complete real-time transmission of multi-point temperature data, realize real-time LCD display of multi-point temperature data collected by DS18B20, and realize ZigBee networking function based on ZigBee protocol stack.
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Joo, Seokwon, Chae‐Eun Lee, Jeongmin Kang, Soonmin Seo, Yoon‐Kyu Song, and Ju‐Hyung Kim. "Intaglio Contact Printing of Versatile Carbon Nanotube Composites and Its Applications for Miniaturizing High‐Performance Devices." Small 18, no. 3 (December 8, 2021): 2106174. http://dx.doi.org/10.1002/smll.202106174.
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Ariyadi, Irfan, and Alexander Nawangseto M. "KERINDUAN PADA NENEK SEBAGAI SUMBER INSPIRASI PANCIPTAAN KARYA SENI GRAFIS." Sanggitarupa 2, no. 2 (December 1, 2022): 76–86. http://dx.doi.org/10.33153/sanggitarupa.v2i2.4764.
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The deep longing for the love and advice from grandmother, which is ingrained in the person, teaches a lot about the simple way of life as a Javanese. The purpose of creating this work of graphic art is to explain the concept, process, and visual description of a work whose inspiration comes from longing for one's grandmother. The technique used is the printing technique (Intaglio). The creation of this Final Project graphic artwork provides more insight regarding the tools, materials, techniques to work on a work. The result obtained from the creation of the work is a work of graphic art inspired by a sense of longing for grandmothers. In addition, empirical experience in creating works of art is also a deepening of the concept of longing for grandmothers.
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Lee, Hakjun, Keunbada Son, Du-Hyeong Lee, So-Yeun Kim, and Kyu-Bok Lee. "Comparison of Wear of Interim Crowns in Accordance with the Build Angle of Digital Light Processing 3D Printing: A Preliminary In Vivo Study." Bioengineering 9, no. 9 (August 25, 2022): 417. http://dx.doi.org/10.3390/bioengineering9090417.
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The aim of this study is to evaluate the wear volume of interim crowns fabricated using digital light processing 3D printing according to the printing angle. A total of five patients undergoing the placement of a single crown on the mandibular molar were included. Interim crowns were fabricated directly in the oral cavity using the conventional method. A digital light processing 3D printer was then used to fabricate crowns with build angles of 0, 45, and 90 degrees. Therefore, four fabricated interim crowns were randomly delivered to the patients, and each was used for one week. Before and after use, the intaglio surfaces of the interim crowns were scanned using a 3D scanner. The volume changes before and after use were measured, and changes in the height of the occlusal surface were evaluated using the root mean square value. Data normality was verified by statistical analysis, and the wear volume in each group was evaluated using a one-way analysis of variance and Tukey’s honestly significant difference test (α = 0.05). Compared with the RMS values of the conventional method (11.88 ± 2.69 µm) and the 3D-printing method at 0 degrees (12.14 ± 2.38 µm), the RMS values were significantly high at 90 degrees (16.46 ± 2.39 µm) (p < 0.05). Likewise, there was a significant difference in the change in volume between the groups (p = 0.002), with a significantly higher volume change value at 90 degrees (1.74 ± 0.41 mm3) than in the conventional method (0.70 ± 0.15 mm3) (p < 0.05). A printing angle of 90 degrees is not recommended when interim crowns are fabricated using digital light processing 3D printing.
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Lo Russo, Lucio, Laura Guida, Pierluigi Mariani, Vincenzo Ronsivalle, Crescenzio Gallo, Marco Cicciù, and Luigi Laino. "Effect of Fabrication Technology on the Accuracy of Surgical Guides for Dental-Implant Surgery." Bioengineering 10, no. 7 (July 24, 2023): 875. http://dx.doi.org/10.3390/bioengineering10070875.
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Background: The accuracy of surgical guides is a relevant factor in both surgical safety and prosthetic implications. The impact of widespread fabrication technologies (milling and 3D printing) was investigated. Methods: Surgical guides manufactured by means of two specific milling and 3D-printing systems were digitized and compared in a 3D analysis with the digital file of the designed guides. The surface mean 3D distance (at the surface where the teeth and mucosa made contact) and the axial and linear deviations of the sleeves’ housings were measured by means of a metrological software program. Univariate and multivariate statistical analyses were used to investigate the effects of the fabrication technology, type of support, and arch type on the surgical guides’ accuracy. Results: The median deviations of the intaglio surface in contact with the mucosa were significantly (p < 0.001) lower for the milled surgical guides (0.05 mm) than for the 3D-printed guides (−0.07 mm), in comparison with the reference STL file. The generalized estimated equation models showed that the axial deviations of the sleeves’ housings (a median of 0.82 degrees for the milling, and 1.37 degrees for the 3D printing) were significantly affected by the fabrication technology (p = 0.011) (the milling exhibited better results), the type of support (p < 0.001), and the combined effect of the fabrication technology and the sleeve-to-crest angle (p = 0.003). The linear deviation (medians of 0.12 mm for the milling and 0.21 mm for the 3D printing) of their center points was significantly affected by the type of support (p = 0.001), with the milling performing slightly better than the 3D printing. Conclusions: The magnitude of the difference might account for a limited clinical significance.
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Kyrychok, Tetiana, Olena Korotenko, Yaroslav Talimonov, and Andrii Kyrychok. "Improving a method for determining the level of wear of the mark for people with visual impairments on Ukrainian hryvnia banknotes." Eastern-European Journal of Enterprise Technologies 5, no. 1 (125) (October 31, 2023): 92–103. http://dx.doi.org/10.15587/1729-4061.2023.287746.
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The object of this study is the wear resistance of marks for people with visual impairments, which are printed by the intaglio printing method on Ukrainian hryvnia banknotes to identify the banknote denominations. The subject of the study is to determine the impact of wear on the recognizability of marks for people with visual impairments and the identification of banknote denominations by people with visual impairments. The paper considers the problem of inadequate assessment of the level of banknote wear by the systems of control and rejection of protected products from the point of view of banknote accessibility for people with visual impairments. An improved methodology for determining the level of wear of the mark for people with visual impairments on Ukrainian hryvnia banknotes is given, taking into account the indicator of its accessibility for all population groups, in particular for people with absolute vision loss, throughout the entire period of circulation. According to the developed methodology, artificial wear of banknotes was carried out according to three test options. The results of changes in the mass of banknotes, the microstructure of the surface of banknotes, the compressibility of marks for people with visual impairments (elasticity level), and the level of tactile identification of the denomination of banknotes by people with total vision loss were obtained. It was determined that during the artificial wear of banknotes, the main destruction of the mark takes place in the first cycle. After the second cycle of wear, there is an increase in the elasticity of the mark for people with visual impairments, a decrease in the level of its tactile sensation and the identification of the denomination of the banknote. Therefore, the properties of banknotes after the second cycle of wear have been determined to be critical for withdrawing such banknotes from circulation. The revealed regularities make it possible to adjust the parameters of intaglio printing during the production of banknotes and to adjust the sorting equipment to determine the suitability of banknotes for further circulation, taking into account the criterion of accessibility of banknotes for all groups of people.
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Cook, K. S. "A geological tale of two cities: Cuvier and Brongniart's map of Paris (1811) and Conybeare and De la Beche's map of Bath (1823)." Geological Curator 11, no. 2 (December 2019): 113–20. http://dx.doi.org/10.55468/gc1477.
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This comparison of two early geological maps, Cuvier and Brongniart's 1811 map of Paris and Conybeare and De la Beche's 1823 map of Bath, explores their publication history, the connections between their French and English authors, and the design and reproduction of the maps. The Paris map was much published and is well known for Brongniart's use of associated fossils to identify the geological formations shown on it, while the Bath map survives in only a few copies and is little known. Nevertheless, the Bath map is interesting as one of the first geological maps to combine area patterns printed in colour with hand-applied area colours to distinguish and relate the geological formations on the map. The Paris map is rightly famous for its compilation and geological content, but the Bath map deserves recognition for its innovative symbolization and use of intaglio colour printing.
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Jürgens, Martin, Ioannis Vasallos, and Lénia Fernandes. "Joseph Berres’s Phototyp." Rijksmuseum Bulletin 66, no. 2 (June 15, 2018): 144–69. http://dx.doi.org/10.52476/trb.9752.
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Following Alfred Donné in Paris, the Austrian Joseph Berres was the second person in history to convert unique daguerreotypes into intaglio printing plates by etching them in acid and then printing them in ink on paper. Berres’s experiments culminated in the booklet Phototyp nach der Erfindung des Professors Berres in Wien (1840), which is considered the first photomechanically illustrated publication. Today, Phototyp is recognized as a key work in the pioneering combination of photography and traditional printmaking as a means of disseminating visual information in the mid-nineteenth century. In this study, the four prints in the Rijksmuseum’s copy of Phototyp, one of only three known remaining copies worldwide, were compared to prints found in other collections. The survey revealed that far fewer prints exist today than were originally produced. The Rijksmuseum prints were also analysed by microscopy and both X-ray and Infrared Spectroscopy. These findings were helpful in the ensuing re-creation of Berres’s process using newly made daguerreotypes. In practical terms, Berres’s process turned out to be far more complex to carry out than his recipes implied. Nevertheless, this endeavour resulted in a better understanding of the materials and methods involved, knowledge that may help in identifying more Berres prints in other collections in the future.
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Cantó-Navés, Oriol, Kyra Michels, Oscar Figueras-Alvarez, Sandra Fernández-Villar, Josep Cabratosa-Termes, and Miguel Roig. "In Vitro Comparison of Internal and Marginal Adaptation between Printed and Milled Onlays." Materials 16, no. 21 (October 30, 2023): 6962. http://dx.doi.org/10.3390/ma16216962.
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Statement of problem: Nowadays, milling is still the gold standard for fabricating indirect restorations, but to overcome its disadvantages, there are alternatives, such as 3D printing. Purpose: This study aimed to compare the gaps between the prepared tooth and milled and printed onlays fabricated with the same CAD design. It also aimed to determine the gap reproducibility across onlays fabricated by 3D printing and milling. Methods: A resin tooth was prepared for an onlay. After scanning the preparation, an onlay was designed with proprietary dental software. Next, 22 onlays were milled in a graphene-reinforced PMMA disc (Group 1), and 22 onlays were 3D-printed with a hybrid composite material (Group 2). After that, all fabricated restorations were scanned and superimposed on the scanned prepared resin tooth. Subsequently, a specific software was used to measure the margin, central, and intaglio-located gap between the milled or printed restoration and the preparation. Finally, measurements were compared with a multifactor analysis of variance. Results: The results demonstrated that printed onlays (Group 2) adapted better to the prepared tooth than the milled ones (Group 1) (p < 0.05). The comparison of standard deviations showed the better gap reproducibility of printed onlays (p < 0.05). Conclusion: This study concluded that the printed onlays adapted significantly better to the prepared tooth than the milled onlays. Printed onlays also showed significantly better gap reproducibility.
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Joo, Seokwon, Chae‐Eun Lee, Jeongmin Kang, Soonmin Seo, Yoon‐Kyu Song, and Ju‐Hyung Kim. "Intaglio Contact Printing of Versatile Carbon Nanotube Composites and Its Applications for Miniaturizing High‐Performance Devices (Small 3/2022)." Small 18, no. 3 (January 2022): 2270013. http://dx.doi.org/10.1002/smll.202270013.
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Dalal, Nishchal, Rami Ammoun, Aous A. Abdulmajeed, George R. Deeb, and Sompop Bencharit. "Intaglio Surface Dimension and Guide Tube Deviations of Implant Surgical Guides Influenced by Printing Layer Thickness and Angulation Setting." Journal of Prosthodontics 29, no. 2 (January 15, 2020): 161–65. http://dx.doi.org/10.1111/jopr.13138.
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Unkovskiy, Alexey, Franziska Schmidt, Florian Beuer, Ping Li, Sebastian Spintzyk, and Pablo Kraemer Fernandez. "Stereolithography vs. Direct Light Processing for Rapid Manufacturing of Complete Denture Bases: An In Vitro Accuracy Analysis." Journal of Clinical Medicine 10, no. 5 (March 4, 2021): 1070. http://dx.doi.org/10.3390/jcm10051070.
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The topical literature lacks any comparison between stereolithography (SLA) and direct light processing (DLP) printing methods with regard to the accuracy of complete denture base fabrication, thereby utilizing materials certified for this purpose. In order to investigate this aspect, 15 denture bases were printed with SLA and DLP methods using three build angles: 0°, 45° and 90°. The dentures were digitalized using a laboratory scanner (D2000, 3Shape) and analyzed in analyzing software (Geomagic Control X, 3D systems). Differences between 3D datasets were measured using the root mean square (RMS) value for trueness and precision and mean and maximum deviations were obtained for each denture base. The data were statistically analyzed using two-way ANOVA and Tukey’s multiple comparison test. A heat map was generated to display the locations of the deviations within the intaglio surface. The overall tendency indicated that SLA denture bases had significantly higher trueness for most build angles compared to DLP (p < 0.001). The 90° build angle may provide the best trueness for both SLA and DLP. With regard to precision, statistically significant differences were found in the build angles only. Higher precision was revealed in the DLP angle of 0° in comparison to the 45° and 90° angles.
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Schoen, Quinn. "The Passbook, Deconstructed." Nka Journal of Contemporary African Art 2022, no. 51 (November 1, 2022): 34–46. http://dx.doi.org/10.1215/10757163-10127139.
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The catalyst of millions of arrests, fervent protests, and a police-led massacre, the passbook is a haunting relic of apartheid South Africa. Operating as a colonial appendage to be carried, tucked away, and presented to police on demand, these pocket-sized identification books radically constrained the mobility and selfhood of Black South Africans. They also gesture toward a perhaps unanticipated symptom of South Africa’s democratic turn: the issue of confronting the stuff of apartheid, the archival debris left over from a system reliant on exhaustive administrative documentation to surveil and compel its subjects. This article contends with the material status of the passbook, examining legacies of haptic contestation enacted upon it in protest alongside a close study of Apartheid Scrolls (1995), a series of intaglio photo-etchings by South African artist Rudzani Nemasetoni, derived from the pages of his father’s thirty-year-old passbook. Tearing, collaging, flattening, printing, Xeroxing, and reconfiguring the document, Nemasetoni signals the fundamental instability of the passbook and the potential to upheave its function, composition, and materiality, and in doing so, joins a lineage of actions that deconstruct and delegitimize the object. Passbooks did not disappear with the abolition of pass laws nor at the end of apartheid. Preserved in institutional and personal archives, thrown in trash heaps, stored in drawers and closets, or configured anew in art, they survive as objects to be faced and contended with. Nemasetoni’s Apartheid Scrolls offers one such way.
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Davis, G. T. "Piezoelectric Polymer Transducers." Advances in Dental Research 1, no. 1 (December 1987): 45–49. http://dx.doi.org/10.1177/08959374870010011101.
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Poly(vinylidene fluoride) (CH2-CF2)n is a tough, flexible polymer readily available in the form of thin film which can be made piezoelectric by the temporary application of a high electric field. The areas of the film which become piezoelectric can be controlled to be the areas where metal electrodes are evaporated onto the film. The same electrodes and associated leads are subsequently used to detect the electric charge generated by the application of pressure to the active area. Such films may have applications in the measurement of occlusal forces. Many of the problems that might be encountered in an occlusal gauge have been addressed separately in other applications. For example, polymer transducers less than 100 μm thick have been developed and tested for measuring the nip pressure on an intaglio printing press. Piezoelectric polymer gauges have been successfully encased in a protective layer of another polymer to prevent the sharp edges of sand particles from breaking through the piezoelectric film. Transducer films with an array of active areas have been produced with electrical leads from each area so that the source of the signal can be traced. Electrode patterns have usually been established by evaporation of metal through a mask, but silk-screening a conductive ink has also been shown to be an effective means of defining which areas of the film are to be made piezoelectric. Finally, poly(vinylidene fluoride) has been shown to retain 80% of its initial activity after 1000 hours at 100°C, and it is unaffected by moisture. Therefore, if necessary, gauges to be used in dentistry could be subjected to steam sterilization for repeated use. The physical properties of such polymer films and examples of their use in pressure transducers are reviewed with the intent of stimulating interest in development of a system useful for measuring occlusal forces.
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Abualsaud, Reem, and Haidar Alalawi. "Fit, Precision, and Trueness of 3D-Printed Zirconia Crowns Compared to Milled Counterparts." Dentistry Journal 10, no. 11 (November 11, 2022): 215. http://dx.doi.org/10.3390/dj10110215.
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Precise fit of a crown and accurate reproduction of the digital design are paramount for successful treatment outcomes and preservation of clinician and technician time. The study aimed to compare the internal fit, marginal adaptation, precision, and trueness of 3D-printed zirconia crowns compared to their milled counterpart. A total of 20 monolithic 3 mol% yttria stabilized-zirconia crowns (n = 10) were made using computer-assisted design (CAD) followed by additive (3D-printed) and subtractive (milled) manufacturing. Digital scanning of the master die with and without a fit checker followed by image superimposition, and analysis was performed to evaluate internal and marginal adaptation in four areas (occlusal, axial, marginal, and overall). ISO 12836:2015 standard was followed for precision and trueness evaluation. Statistical analysis was achieved using a t-test at α = 0.05. Internal fit and marginal adaptation revealed no significant difference between the two test groups (p > 0.05). The significant difference in trueness (p < 0.05) was found between the two groups in three areas (occlusal, axial, and internal). The best and worst trueness values were seen with 3D-printed crowns at occlusal (8.77 ± 0.89 µm) and Intaglio (23.90 ± 1.60 µm), respectively. The overall precision was statistically better (p < 0.05) in the 3D-printed crowns (9.59 ± 0.75 µm) than the milled (17.31 ± 3.39 µm). 3D-printed and milled zirconia crowns were comparable to each other in terms of internal fit and marginal adaptation. The trueness of the occlusal and axial surfaces of 3D-printed crowns was better, whereas the trueness of fitting surface of milled crowns was better. 3D-printed crowns provided a higher level of precision than milled crowns. Although the internal and marginal fit of both production techniques were comparable, 3D printing of zirconia produced more precise crowns.
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Zubova, Nataliia, Serhii Naumenko, Viktor Somov, and Valentyn Fesiunin. "TYPES OF RELIEF ELEMENTS ON BANKNOTES AND WAYS TO IMITATE THEM." Criminalistics and Forensics, no. 68 (July 3, 2023): 365–81. http://dx.doi.org/10.33994/kndise.2023.68.37.
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The article is devoted to the consideration of methods for imitation of relief elements and perforation in the manufacture of counterfeit banknotes. In the manufacture of banknotes in modern conditions, the latest scientific and technical achievements are used. The reliability of protection of banknotes from forgery is ensured by the simultaneous use of a complex of security features of different levels. With the development of technological progress, new protective elements appear, and the reproduction of those already introduced into production gradually becomes available for reproduction by counterfeiters. In an effort to bring the appearance of counterfeit banknotes closer to those issued by issuing institutions, criminals use various techniques to imitate security elements and materials. Most often, they try to imitate the so-called public elements, known to most citizens and perceived by sight or by touch. A variety of relief elements are an indispensable attribute of the design of any banknote. Relief elements are among the important public security elements of banknotes issued for cash circulation. They are informative and easily perceived visually and tactilely. In addition to the protective function, they provide convenience for people with visual impairments to recognize the denomination of a banknote. At the same time, even a primitive forgery of the relief element of a banknote can mislead an ordinary citizen, because it imitates the presence of a corresponding sign or image. The article describes the technology of applying embossed signs, the concepts of «painted» and «unpainted» embossed signs, and elements with KIPP-effect or PEAK-effect, as well as these concepts are illustrated with examples using banknotes that are issued by issuing institutions. The methods of imitation of relief signs on counterfeit banknotes are highlighted and illustrated by cases from expert practice, namely: by making special relief forms and applying colourless embossing in the areas of the elements corresponding to the elements applied by intaglio printing on banknotes; imitation of relief elements on counterfeit banknotes, implemented by applying to the areas where relief elements should be located on a real banknote, convex strokes of arbitrary shape, or strokes formed by individual dots, which may not match the coloured image in content; creating relief by applying a layer of a transparent substance to the location of the corresponding inscription or image, made by inkjet or another non-relief printing method; by «powdering» a non-gravure print of a wet ink image with polymer powder on the face of the note to create a relief effect. The article gives a brief definition of micro-perforation, describes the technology of applying micro-perforation on banknotes, and provides illustrations of banknotes with elements applied by micro-perforation. Using examples from expert practice, methods for simulating perforation on counterfeit banknotes are considered, illustrating the features of the corresponding imitation method.
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Sakamoto, Kunio, and Shota Shiojiri. "P‐4.8: Unidirectional Observable Aero Signage Display Using Dye‐doped Corner Cube Prisms Which Enable to Make Transparent from Back Side." SID Symposium Digest of Technical Papers 54, S1 (April 2023): 652–55. http://dx.doi.org/10.1002/sdtp.16376.
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Suppose that you look Arabic numerals on transparent glass windows or in the air. Which does it mean ‘85’ or ‘28’? You end up watching the mirrored images when you view from back side. So let us make the mirrored image invisible. To solve mirrored image problems of an aero signage which means images are floating in the air, our research group has utilized dye‐doped prisms and total internal reflection in optics. You know that water is generally colorless and transparent but the water in a bath tub is little blue. The color changes depending on the depth of water. The deeper, the darker water becomes blue. This is the reason why some color is generated in the dye‐doped material. In 2021, we presented a unidirectional observable display using letterings made by intaglio printings for arranging dye‐doped tiny prisms on a glass window. You can watch these colored letterforms from front and transparent pixels from back. But this 2021 model has a little defect that colors are less vivid because of color generating mechanism by twice reflection in conventional optical prisms using transparent materials for making transparent from back side. In this paper, the authors show an aero signage display using dye‐doped corner cube prisms which can lengthen light paths in the prism by multi‐times reflections to avoid the semi‐transparent problem which means colors are not vivid.
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Leonelli, Giulia. "The pictorial ways in intaglio printing." Nouvelles de l'estampe, no. 269 (April 15, 2023). http://dx.doi.org/10.4000/estampe.4141.
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Faur, Andrei-Bogdan, Raul Nicolae Rotar, and Anca Jivănescu. "Intaglio surface trueness of dentures bases fabricated with 3D printing vs. conventional workflow: a clinical study." BMC Oral Health 24, no. 1 (June 8, 2024). http://dx.doi.org/10.1186/s12903-024-04439-8.
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AbstractThe latest generation of intraoral scanners can record the prosthetic field with relative ease, high accuracy and comfort for the patient, and have enabled fully digital protocols for designing and manufacturing complete dentures. The present study aims to examine the intaglio surface trueness of 3D printed maxillary dentures produced by fully digital workflow in comparison with dentures produced by analogue clinical and laboratory prosthetic workflow. The edentulous maxillary arch of 15 patients was scanned with an intraoral scanner as well as the intaglio of the delivered conventional denture. The scan of the edentulous arch was imported into a dental design software to produce the denture base which was then 3D printed. The intaglio surface of the finished 3D printed denture bases was digitized and used to assess the trueness of the printed denture bases compared to the intaglio surface of the conventional dentures as well as performing a trueness comparison in relation to the scanned edentulous arches. The dataset (n = 30) was subjected to Kruskal-Wallis test analysis, the significance level being established at α = 0.05. The results of the study showed that the printed group displayed better trueness values with a median of 176.9 μm while the analogue group showed a median of 342 μm. Employing a fully digital workflow to produce 3D-printed denture bases yields a consistent and precise manufacturing method when accounting for the intaglio surface of the denture.
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Kyrychok, T., P. Kyrychok, S. Havenko, Е. Kibirkštis, and V. Miliūnas. "The influence of pressure during intaglio printing on banknotes durability." Mechanics 20, no. 3 (June 25, 2014). http://dx.doi.org/10.5755/j01.mech.20.3.7393.
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Kim, Hye Hyun, Kiwook Kim, Jiwoong Yang, and Moon Kee Choi. "High‐Resolution Intaglio Transfer Printing of Silver Nanowires for Wearable Electrophysiological Sensors." Advanced Materials Technologies, November 8, 2023. http://dx.doi.org/10.1002/admt.202301262.
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AbstractSilver nanowires (NWs) are promising materials for flexible electronics, such as electronic skins due to their excellent electrical, thermal, and mechanical properties. Achieving precise patterning of Ag NWs is essential for the successful integration and miniaturization of the electronic device system, but the high aspect ratio (AR) of NWs and the high porosity of NW networks pose challenges in forming high‐resolution patterns. Herein, the intaglio transfer printing technique to create high‐resolution patterning of ultralong Ag NWs (AR≈1000) is presented. During the pattern formation process, the external force becomes concentrated specifically at the edge of the intaglio trench, resulting in the breaking of the entangled Ag NW network in the corresponding region. This simple yet effective technique enables precise high‐resolution (minimum line width: 7 µm) and complicated Ag NW patterns on flexible substrates. The patterned Ag NWs are conformally attached to the various curvilinear surfaces and show high mechanical stability under continuous bending conditions. Wearable electrophysiological sensors are demonstrated to monitor electromyography and electrocardiogram signals in real‐time for continuous healthcare monitoring. This patterning strategy offers an effective approach for achieving high‐resolution patterns of highly anisotropic nanomaterials and highlights the potential of patterned Ag NWs in wearable electronics.
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"Basic techniques of fine art printmaking: relief, intaglio, screen printing, lithography." Choice Reviews Online 28, no. 07 (March 1, 1991): 28–4215. http://dx.doi.org/10.5860/choice.28-4215.
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Ekojono, Ekojono, Luqman Affandi, and Dhebys Suryani. "METODE PEMANFAATAN COMMAND LINE UNTUK DIRECT PRINTING PADA APLIKASI BERBASIS WEB." Jurnal Teknologi Informasi, October 31, 2016. http://dx.doi.org/10.36382/jti-tki.v7i2.222.
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Dalam urusan cetak mencetak dikenal dan bisa dilakukan dengan empat cara yaitu Teknik cetak tinggi (Letterpress), Teknik Cetak Datar (Lithography dan Offset), Teknik Cetak Dalam (Rotogravure dan Intaglio), Teknik Cetak Saring (Screen Printing). Masing masing dari teknik tersebut digunakan sesuai dengan media dan tujuan dari pencetakan. Tidak diragukan lagi, direct printing masih menjadi andalan untuk urusan cetak-mencetak, terutama untuk program/aplikasi POS. Karena aplikasi ini membutuhkan kecepatan dalam melakukan cetak dokumen/struk. Kendala utama yang dialami adalah sulitnya mencetak data menggunakan direct printing melalui sebuah aplikasi POS berbasis web. Hal ini terjadi karena produsen printer biasanya hanya menyertakan API atau dll untuk program berbasis desktop. Dari kendala tersebut dapat diatasi dengan pemanfaatan perintah command line melalui PHP.Kata kunci: command line, direct print
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Charoenphol, Kanyakorn, and Chaimongkon Peampring. "Fit Accuracy of Complete Denture Base Fabricated by CAD/CAM Milling and 3D-Printing Methods." European Journal of Dentistry, December 13, 2022. http://dx.doi.org/10.1055/s-0042-1757211.
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Abstract Objective Digital complete denture fabrication can be accomplished by either milling or three-dimensional (3D)-printing approach in which minimal distortion during processing contributes to effective denture base adaption, which leads to good denture retention. The purpose of this study was to compare the fit accuracy of milled and 3D-printed complete denture bases. Materials and Methods The reference edentulous maxillary arch model was scanned to generate virtual denture bases using computer-aided manufacturing software that exports as standard tessellation language files. Denture bases were constructed using a milling and 3D-printing technique using digital light processing method (n = 10). Intaglio surfaces of denture bases were scanned and superimposed on the reference model. The fit accuracy was quantified as root mean square error and evaluated statistically using independent t-test comparisons with a significance level of 0.05. Results Milled denture bases were significantly more accurate in adaptation than 3D-printed dentures in the overall intaglio area and primary bearing area of denture bases. 3D-printed denture bases demonstrated significantly greater accuracy in adaptation than milled denture bases in the peripheral/posterior palatal seal area. Conclusion Milled denture bases fit better in the overall and primary stress-bearing areas than 3D-printed dentures, while 3D-printed dentures appeared more accurate in the peripheral seal area, which had a minor undercut that is not suitable for using milling technology.
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Su, Dan, Wei‐Long Wu, Pan‐Qin Sun, Yu‐Chen Yuan, Ze‐Xian Chen, Yun‐Feng Zhu, Kai‐Yu Bi, Huan‐Li Zhou, and Tong Zhang. "Thermal‐Assisted Multiscale Patterning of Nonplanar Colloidal Nanostructures for Multi‐Modal Anti‐Counterfeiting." Advanced Science, October 22, 2023. http://dx.doi.org/10.1002/advs.202305469.
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AbstractNanotransfer printing of colloidal nanoparticles is a promising technique for the fabrication of functional materials and devices. However, patterning nonplanar nanostructures pose a challenge due to weak adhesion from the extremely small nanostructure‐substrate contact area. Here, the study proposes a thermal‐assisted nonplanar nanostructure transfer printing (NP‐NTP) strategy for multiscale patterning of polystyrene (PS) nanospheres. The printing efficiency is significantly improved from ≈3.1% at low temperatures to ≈97.2% under the glass transition temperature of PS. Additionally, the arrangement of PS nanospheres transitioned from disorder to long‐range order. The mechanism of printing efficiency enhancement is the drastic drop of Young's modulus of nanospheres, giving rise to an increased contact area, self‐adhesive effect, and inter‐particle necking. To demonstrate the versatility of the NP‐NTP strategy, it is combined with the intaglio transfer printing technique, and multiple patterns are created at both micro and macro scales at a 4‐inch scale with a resolution of ≈2757 pixels per inch (PPI). Furthermore, a multi‐modal anti‐counterfeiting concept based on structural patterns at hierarchical length scales is proposed, providing a new paradigm of imparting multiscale nanostructure patterning into macroscale functional devices.
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Margarida Rocha, Ana, Graciela Machado, Teresa Almeida, and César Laia. "Light-Emitting Prints on Glass." IMPACT Printmaking Journal, November 26, 2020, 15. http://dx.doi.org/10.54632/20.2.impj3.
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This research project aims to extend the scope of fine art printing on glass using innovative photoluminescent enamels. This paper demonstrates how these newly created materials, developed by a multidisciplinary team of artists and chemists, can be used as ink to print on glass, both with direct methods and through transfer papers (decals). The methodology used involved studio-based experiments and sampling tests, aiming to verify the ease of adopting identical printing approaches to screen printing, intaglio and photopolymer techniques on paper and glass, and evaluating whether the extent of techniques and respective marks produced were compatible with the application of luminescent enamels. Photoluminescent glass inks have a very attractive aesthetic effect for their ability to change colour and re-emit light after exposure to ultraviolet radiation. This represents a unique opportunity for artists wishing to work on the fields of light, colour, perception and visuality. The unique features of light-emitting images are discussed from a conceptual and aesthetic realm in two installation projects which seek to shape visual experience, combining the visual with the haptic.
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Iswandi, Heri. "PERKEMBANGAN SENI GRAFIS DI PALEMBANG KONTINUITAS DAN PERUBAHANNYA." Besaung : Jurnal Seni Desain dan Budaya 2, no. 2 (November 29, 2017). http://dx.doi.org/10.36982/jsdb.v2i1.276.
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Be segmented in a particular mainstream. Let us not limit and discuss the technique or media, which is important in the content. Modern graphic art is conventionally defined as a two-dimensional work that utilizes printing processes such as high print (relief print), in-print (intaglio), flat print (planography), and screen printing (serigrafi, screen printing) that are part of the construction of the art area pure. But as far as the development of print technology is concerned, this conventional conception needs to be questioned again whether the agreed convention values should be run in place and undeveloped, while the development of the times with all dimensions continues to move forward. Conventional graphic art can not be closed from the changing times. Contemporaryization is an option. Because, in fact this country does not have the roots of graphic art tradition. Graphic art can be roughly classified as one of pure art, based on the purpose and function that is carried, that is to satisfy or express themselves. As for if the goal has been shifted from the initial goal to fulfill kepuaasan or express themselves, then the question arises whether the graphic art can be classified into pure art or applied art. this needs further study. Keywords:  Fine art, Graphic arts, Its development.
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Choi, Moon Kee, Jiwoong Yang, Kwanghun Kang, Dong Chan Kim, Changsoon Choi, Chaneui Park, Seok Joo Kim, et al. "Wearable red–green–blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing." Nature Communications 6, no. 1 (May 14, 2015). http://dx.doi.org/10.1038/ncomms8149.
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Limpiwatana, Seehachart, and Noppavan Nagaviroj. "Intaglio Surface Adaptation of Removable Partial Denture Framework Fabricated by Various Data Acquisition Techniques and Fabrication Approaches." European Journal of Dentistry, September 20, 2023. http://dx.doi.org/10.1055/s-0043-1772245.
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Abstract Objectives The aim of this study was to compare intaglio surface adaptation of the removable partial denture framework among various data acquisition techniques and fabrication approaches using three-dimensional comparison by metrology software. Materials and Methods The partial edentulous typodont model with five digital superimposition landmarks was duplicated and scanned for the digital reference model. Three approaches were the conventional lost-wax (group I; LWT, n = 5), intraoral digital impressions combined with PolyJet printing and lost-wax (group II; IP-LWT, n = 5), and extraoral digital impressions combined with PolyJet printing and lost-wax (group III; EP-LWT, n = 5). Each framework was scanned and superimposed with the reference model. The misfits at 53 locations were measured. Statistical Analysis Data were statistically analyzed by one-way analysis of variance, followed by Tukey's honestly significant difference for pairwise comparisons (p < 0.05). Results Significant differences were found between three approaches at the reciprocal arm, terminal part of the retentive arm, rest, and major connector (p < 0.05). In the LWT group, the reciprocal arm and palatal vault region of major connector had the lowest misfits, but the highest misfit was found in the midline region (p < 0.001). In the IP-LWT group revealed the most excessive contact at the terminal part of the retentive arm (-0.111 ± 0.038 mm, p = 0.031), with the highest misfit at the rest area (p < 0.001). Conclusion A difference in adaptation was found in several removable partial denture framework components among three approaches. The LWT group had a better adaptation than other groups. Nevertheless, a clinically acceptable adaptation was seen in all three approaches.
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Lopes, David, and Graciela Machado. "The use of 19th - century Cartography Printing Processes in Contemporary Printmaking." IMPACT Printmaking Journal, January 13, 2023, 24. http://dx.doi.org/10.54632/22.7.impj2.
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In the 19th century, the field of cartography grew exponentially when photomechanical printing became a stabilised procedure for the graphic arts industry. With the introduction of photomechanical processes, in the early developments of chromolithography, maps not only became a widespread product in Europe and the United States but they were also refined and became increasingly visually complex.
The interaction between scientists and printmakers also changed. As photomechanical processes allowed cartographers to autonomously transfer, reduce or enlarge maps, scientists and military personnel took over the task of translating images onto the wood or copper plates - a job traditionally assigned to a skilled engraver (Cook, 2002) This has also shifted the authorship of printmaking literature to scientists and military personnel, such as captains or colonels (Twyman, 1990).
Early printing techniques - such as woodcut or intaglio - are practised today within a very specific setting for particular needs. In the framework of contemporary art, design, or illustration, aspects such as the materiality of images are discussed, visually experimented with, and exhibited. While some industrial printing techniques have gained artistic standing - serigraphy, for example - a wider range of processes are hidden in the past (R. Williams and D. Williams, 1986). Cook (2002) argues that both cartography and printmaking owe each other a great deal for their progress. In the history books, however, one rarely recognises the other. We argue this is because printmaking as a profession has been split between art and science.
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Hemalatha, Kunda, and E. Sasikala Reddy. "An Image Processing-Driven System for Fake Currency Detection." International Journal of Emerging Research in Engineering, Science, and Management 2, no. 4 (2023). http://dx.doi.org/10.58482/ijeresm.v2i4.2.
Full textAbstract:
Fake currency is a critical factor affecting economies worldwide, including India. In this paper, a novel and structurally efficient approach for detecting and identifying duplication in currency notes is presented using Discrete Wavelet Transform (DWT). The system employs image processing algorithms to extract essential features such as security thread, intaglio printing (RBI logo), and identification mark, which serve as security measures for Indian currency. To identify fake portions in the currency notes and make informed decisions about their authenticity, the matching scores from all fake detection modules are fused together. A crucial aspect of the work lies in comparing the extracted features from various currency notes, enabling us to differentiate between fake and genuine notes effectively. To assess the performance, mean square error is employed as a metric for comparison between two images. A database is build containing authentic Indian notes of different denominations, extract their features, convert them into binary equivalents, and then calculate their mean square error. The proposed Fake Note Detection System takes a test currency note image, performs preprocessing operations to eliminate noise and negative artifacts, and then proceeds with the detection process. The system offers a promising solution to combat counterfeit currency issues and safeguard the integrity of the Indian economy.
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Hemalatha, Kunda, and E. Sasikala Reddy. "An Image Processing-Driven System for Fake Currency Detection." International Journal of Emerging Research in Engineering, Science, and Management 2, no. 2 (2023). http://dx.doi.org/10.58482/ijeresm.v2i2.2.
Full textAbstract:
Fake currency is a critical factor affecting economies worldwide, including India. In this paper, a novel and structurally efficient approach for detecting and identifying duplication in currency notes is presented using Discrete Wavelet Transform (DWT). The system employs image processing algorithms to extract essential features such as security thread, intaglio printing (RBI logo), and identification mark, which serve as security measures for Indian currency. To identify fake portions in the currency notes and make informed decisions about their authenticity, the matching scores from all fake detection modules are fused together. A crucial aspect of the work lies in comparing the extracted features from various currency notes, enabling us to differentiate between fake and genuine notes effectively. To assess the performance, mean square error is employed as a metric for comparison between two images. A database is build containing authentic Indian notes of different denominations, extract their features, convert them into binary equivalents, and then calculate their mean square error. The proposed Fake Note Detection System takes a test currency note image, performs preprocessing operations to eliminate noise and negative artifacts, and then proceeds with the detection process. The system offers a promising solution to combat counterfeit currency issues and safeguard the integrity of the Indian economy.
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Yu, Beom-Young, KeunBaDa Son, and Kyu-Bok Lee. "Evaluation of intaglio surface trueness and margin quality of interim crowns in accordance with the build angle of stereolithography apparatus 3-dimensional printing." Journal of Prosthetic Dentistry, August 2020. http://dx.doi.org/10.1016/j.prosdent.2020.04.028.
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-, Dr Deepika Bhandari, Preet Kumar -, Navpreet Kaur -, Priya Sharma -, Himanshu Khandekar -, Jaswinder Singh Chouhan -, and Dr Vivek Sahajpal -. "Comparative Analysis of Security Features in Banknotes Across Various Global Economies using VSC®-8000/HS." International Journal For Multidisciplinary Research 5, no. 5 (October 21, 2023). http://dx.doi.org/10.36948/ijfmr.2023.v05i05.7717.
Full textAbstract:
Background: Banknote counterfeiting is a serious issue. Every government adds various security elements to its banknotes to avoid forgery. The security measures inducted in the banknotes reduce the likelihood of counterfeiting. These are the unique elements that are incorporated during the production process. Paper quality, intaglio printing, watermarks, security threads, latent images, etc. are some of these unique properties. Every nation has a unique set of security characteristics. In the year 2016 India demonetized and recalled all of its highest denomination bank notes (Rs. 1000 and Rs. 500) in order to cease counterfeiting. Thereafter, there has been incorporation of various security features in the current Mahatma Gandhi series to make the currency standout with other international currencies, in order to reduce the chances of forgery as per the sections 489A-489E of Indian Penal Code, 1872. Methods: Banknote samples were analyzed using the non-destructive Video Spectral Comparator 8000 (VSC®-8000/HS) by foster+freeman®. Each sample was placed in the live-camera unit with high- resolution 12-megapixel camera forming the part of Super Resolution Imaging (SRI) system. Front and back pictures of the banknotes were taken in white light. The samples were then examined under various illumination settings (Spot Light, Oblique Light, Transmitted Light, UV-light, and Infrared light) for both sides. Security features like Microprinting, Micro texting, Guilloche Pattern, OVI, Watermarks, etc., were studied. Results: In the current research paper, the security characteristics of the banknotes of ten different countries are compared utilizing VSC®-8000/HS. Analysis reveals Thai Baht with the most security features, followed by Vietnamese Dong, Czech Koruna, Indian Rupees, and others. Notably, Indian banknotes stand out due to UV features, security thread, latent image, and strategic micro text placement. Conclusions: This research paper recognizes the importance of security features in various banknotes including the Indian banknotes and also provides some of the recommendations to enhance the quality and security features in the Indian banknotes.