Добірка наукової літератури з теми "Flex printing"
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Статті в журналах з теми "Flex printing"
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Tipanna, M., and D. D. Kale. "Composites of Waste, Ground Rubber Particles and Poly(Vinyl Chloride)." Rubber Chemistry and Technology 70, no. 5 (November 1, 1997): 815–19. http://dx.doi.org/10.5254/1.3538462.
Повний текст джерелаАнотація:
Abstract Composites of poly(vinyl chloride) (PVC) were prepared with waste, finely ground printing rollers of nitrile rubber over a wide range of composition (up to 90% by weight of rubber component), through melt blending. The effect of different amounts of waste rubber on the tensile strength, % elongation, hardness, and flex crack resistance was studied. There was a considerable increase in the impact properties of PVC. Flex crack resistance was also significantly improved as the specimen did not crack even after 150,000 cycles for all composition containing more than 40% waste rubber. The waste rubber also imparted a plasticizing effect to PVC. The improvement in these properties could be due to interaction between PVC and the acrylonitrile part of nitrile rubber.
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Otegen, D., K. Shomenov, K. Zhangabay, Desmond Adair, and Md Hazrat Ali. "Development of an AFO with Dual-material using an FDM Printer." Journal of Physics: Conference Series 2070, no. 1 (November 1, 2021): 012200. http://dx.doi.org/10.1088/1742-6596/2070/1/012200.
Повний текст джерелаАнотація:
Abstract This paper presents a design and development of an Ankle Foot Orthosis (AFO) printed with a multi-extrusion Fused Deposition Modelling (FDM) printer. AFO is crucial in the healing of patients with ankle joint displacement. It helps to heal the foot easily. The model is designed to print with dual materials such as flex and polylactic acid (PLA). The critical problem in building a prototype is to obtain excellent bonding properties between the layers of different materials. The Flex material is softer than the PLA and both have different melting temperatures. Thus, successfully printing with an excellent adhesive is the key concern in multimaterial applications. The paper also presents the simulation results of an AFO to justify the mechanical properties and required materials for sustainable development.
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Arulmozhi, R. Swetha, Mahima Vaidya, M. G. Poojalakshmi, D. Ashok Kumar, and K. Anuraag. "3D DESIGN AND PRINTING OF CUSTOM-FIT FINGER SPLINT." Biomedical Engineering: Applications, Basis and Communications 30, no. 05 (September 10, 2018): 1850032. http://dx.doi.org/10.4015/s1016237218500321.
Повний текст джерелаАнотація:
Finger deformities are a major concern among the Indian population, where the increase of risk factors are higher for people suffering from Rheumatoid Arthritis. The deformities hinder the movements in the finger, affecting their day to day activities. Finger splint is a device which is used to support and correct this deformity in order to improve function. Three-dimensional modeling and 3D printing techniques are the standard measures used. The proposed methodology involves 3D modeling which was done using Solidworks 2013, along with standard measurements taken from the patients with deformities due to Rheumatoid Arthritis. The measurements were obtained using a vernier caliper. The 3D printing was done using Fused Deposition Modeling (FDM) and the materials needed for the same are Acrylonitrile Butadiene Styrene (ABS) and flex Polylactic Acid (PLA). The 3D printer used for the same is Flashforge Dreamer 3D printer. The volunteers were fitted with the custom finger splint. The finger splint is light-weight, easy to maintain and clean, with an inventive design based on the finger deformity. It is comfortable and helps support the patients during daily activities. It serves as an easy slip-on. Since it is well-ventilated, swelling of the finger does not occur. Future research will focus on the correction of the deformity, in addition to the biomechanical aspect of finger deformities.
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Argyropoulos, Athanasios, and Pantelis N. Botsaris. "Modern Applications of 3D Printing: The Case of an Artificial Ear Splint Model." Methods and Protocols 4, no. 3 (August 6, 2021): 54. http://dx.doi.org/10.3390/mps4030054.
Повний текст джерелаАнотація:
Three-dimensional (3D) printing is a leading manufacturing technique in the medical field. The constantly improving quality of 3D printers has revolutionized the approach to new challenges in medicine for a wide range of applications including otoplasty, medical devices, and tissue engineering. The aim of this study is to provide a comprehensive overview of an artificial ear splint model applied to the human auricle for the treatment of stick-out protruding ears. The deformity of stick-out protruding ears remains a significant challenge, where the complex and distinctive shape preservation are key factors. To address this challenge, we have developed a protocol that involves photogrammetry techniques, reverse engineering technologies, a smart prototype design, and 3D printing processes. Specifically, we fabricated a 3D printed ear splint model via fused deposition modelling (FDM) technology by testing two materials, a thermoplastic polyester elastomer material (Z-Flex) and polycaprolactone (PCL 100). Our strategy affords a custom-made and patient-specific artificial ear aligner with mechanical properties that ensures sufficient preservation of the auricular shape by applying a force on the helix and antihelix and enables the ears to pin back to the head.
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Krčma, Martin, David Škaroupka, Petr Vosynek, Tomáš Zikmund, Jozef Kaiser, and David Palousek. "Use of polymer concrete for large-scale 3D printing." Rapid Prototyping Journal 27, no. 3 (February 27, 2021): 465–74. http://dx.doi.org/10.1108/rpj-12-2019-0316.
Повний текст джерелаАнотація:
Purpose This paper aims to focus on the evaluation of a polymer concrete as a three-dimensional (3D) printing material. An associated company has developed plastic concrete made from reused unrecyclable plastic waste. Its intended use is as a construction material. Design/methodology/approach The concrete mix, called PolyBet, composed of polypropylene and glass sand, is printed by the fused deposition modelling process. The process of material and parameter selection is described. The mechanical properties of the filled material were compared to its cast state. Samples were made from castings and two different orientations of 3D-printed parts. Three-point flex tests were carried out, and the area of the break was examined. Computed tomography of the samples was carried out. Findings The influence of the 3D printing process on the material was evaluated. The mechanical performance of the longitudinal samples was close to the cast state. There was a difference in the failure mode between the states, with cast parts exhibiting a tougher behaviour, with fractures propagating in a stair-like manner. The 3D-printed samples exhibited high degrees of porosity. Originality/value The results suggest that the novel material is a good fit for 3D printing, with little to no degradation caused by the process. Layer adhesion was shown to be excellent, with negligible effect on the finished part for the longitudinal orientation. That means, if large-scale testing of buildability is successful, the material is a good fit for additive manufacturing of building components and other large-scale structures.
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Argyropoulos, Athanasios, and Pantelis N. Botsaris. "Research, study, design and development of an artificial ear splint model by using a 3D printer." MATEC Web of Conferences 318 (2020): 01018. http://dx.doi.org/10.1051/matecconf/202031801018.
Повний текст джерелаАнотація:
The aim of this research study centers around the design and development, using a three-dimensional model of an ear-splint. This study results from the need of a non-invasive method, as the current techniques used in otoplasty have succeeded in reducing the risk of complications, but without drastically reducing the rate of postoperative deformity. Indeed, stick out ears present a deformity that occurs in 5% of the population. Factors such as psychosocial impact and intimidation lay the foundations for the need for such a method. This paper essays to create, through 3D printing, a case customized into the ear of any person of all ages. The splint was made on Zortrax M200 3D printer model, equipped with the V3 Hotend head, and the material used for printing was 16 grams of Z-FLEX. It is noted that the creation of the case is innovative and original. After putting the ear-splint into test, by applying it on a human ear, two conclusions emerge. First, it is very light, weight, just 16 grams, and second, it offers comfort and convenience to the user. In order to get results for its practicality, a clinical rehabilitation study is recommended.
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Sajid, Memoon, Hyun Woo Dang, Kyoung-Hoan Na, and Kyung Hyun Choi. "Highly stable flex sensors fabricated through mass production roll-to-roll micro-gravure printing system." Sensors and Actuators A: Physical 236 (December 2015): 73–81. http://dx.doi.org/10.1016/j.sna.2015.10.037.
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Malliori, A., A. Daskalaki, A. Dermitzakis, and N. Pallikarakis. "Development of Physical Breast Phantoms for X-ray Imaging Employing 3D Printing Techniques." Open Medical Imaging Journal 12, no. 1 (April 21, 2020): 1–10. http://dx.doi.org/10.2174/1874347102012010001.
Повний текст джерелаАнотація:
Objective: This study aims to investigate the use of 3D printing techniques for the fabrication of physical breast phantoms, suitable for conventional and phase contrast breast imaging. Such phantoms could provide essential information for the design, development and optimization of emerging X-ray imaging modalities. Materials and Methods: Physical phantoms were constructed using two 3D printing techniques: Fused Deposition Modeling and Stereolithography. Eight materials suitable for 3D printing, including thermoplastic filaments and photopolymer resins, were investigated for the optimal representation of breast tissues, based on their attenuation and refractive characteristics. The phantoms consisted of a 3D-printed mold, which was then manually filled with paraffin wax. Additionally, a 3D complex-patterned layer and details representing abnormalities were embedded in different depths. Images of the phantoms were obtained in attenuation and phase contrast mode. Experiments were conducted using an X-ray microfocus tube with Tungsten anode set to 55kVp, combined with a photon-counting detector. The distance between source and detector was 56.5cm. The images were acquired at different object-to-detector distances starting from 5cm up to 40cm in a free space propagation set-up. Results and Conclusion: Results show that among all combinations with paraffin used as an adipose substitute, phantoms created with the Stereolithography technique and resins (especially Flex) as glandular equivalent, were found to be more appropriate for both attenuation and phase contrast imaging. The edge enhancement effect was well observed in the experimental images acquired at 35cm object-to-detector distance, indicating the potential for improved feature visualization using this set-up in phase contrast compared to attenuation mode.
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Tungol, Mary Widmark. "Infrared Microscopy As A Failure Analysis Tool In The Thermal Inkjet Cartridge Industry." Microscopy and Microanalysis 5, S2 (August 1999): 62–63. http://dx.doi.org/10.1017/s1431927600013635.
Повний текст джерелаАнотація:
Four major components comprise an inkjet cartridge (Fig.lA): (1) the pen body which contains the ink and positions the cartridge in the printer; (2) an ink delivery system which supplies ink at the correct backpressure and flow rate; (3) a flex circuit which provides the electrical interconnect to the printer; and (4) the printhead which generates and directs the drops. Because of its complexity and small critical dimensions, the printhead poses the greatest analytical challenge for many failure analysis problems. Each printhead may contain as many as 300 firing chambers (Fig. IB). Each chamber consists of a resistor surrounded by a polymer-based barrier material which forms a cavity into which ink flows from the ink delivery system. The chamber is capped by a metal or polymer orifice-containing plate. Printing occurs when the resistor is heated to form an ink vapor bubble which subsequently ejects a droplet of ink though the orifice onto the paper.
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Fries, David, and Chase StarrGeran Barton. "2D PCB WITH 3D PRINT FABRICATIONS FOR RIGID-CONFORMAL PACKAGING OF MICROSENSOR IMAGING ARRAYS BASED ON BIOINSPIRED ARCHITECTURES." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, DPC (January 1, 2014): 001012–45. http://dx.doi.org/10.4071/2014dpc-tp33.
Повний текст джерелаАнотація:
Macro sensor systems typically measure a localized space above a single sensor element. Expanding these single sensor elements into arrays permits spatial distribution measurements of a particular parameter and allow flux visualizations. Furthermore, applying microsystems technology to macro sensor systems yields imaging arrays and high resolution spatial/temporal sensing functions. Extending the high spatial resolution imaging over large areas is a desirable feature for new “vision” modes on autonomous robotic systems and for deployable environmental sensors. Rigid-flexible PCB's are desirable for miniaturization and integration of systems for mobile technology. The hybrid substrates provide substantial flexibility in systems design and integration of multiple functions into limited spaces. Using this design and construction approach allows lightweight, complex, and space efficient systems. Flex microsystems based on structured, fiber or non-fiber filled PCB laminates permits packaging to occur at two levels, at the local (micro) substrate scale and at the macro scale with the ability to flex the system across millimeter to centimeter lengths on real everyday systems. We continue to explore the use of PCB and PCBMEMS technology for new sensing concepts. In order to create rigid-conformal, large area imaging “camera” systems we have merged flexible PCB substrates with rigid constructions from 3D printing. This approach merges the 2D flexible electronics world of printed circuits with the 3D printed packaging world. Furthermore employing architectures used by biology as a basis for our imaging systems we explored naturally and biologically inspired designs, and their relationships to non-visible imagery, and alternate mechanical systems of perception. Radiolaria are extremely tiny ocean organisms that utilize a similar additive construction process to 3D printing. Their cell bodies secrete a substance mainly composed of silica to form intricate exoskeletons used as a system of protection. A correlation can be made between the radiolaria's construction process and the plastic extrusion system of the 3D fused deposition model printer. The benefits of additive construction are efficient use of materials, reduced cost and energy, and ability to customize forms. Through the use of bio-inspiration, a framework is laid out to base further research on (DFP)-design for packaging. Radiolarian exoskeletons take on a grid-like pattern while creating a cage around each microsensor interior and producing strong scaffolding. Using the 3D printed exoskeleton's form and function with flexible printed circuits one can create systems that are both rigid and form fitting with three-dimensional shape and enable new camera systems for various sensory applications.
Дисертації з теми "Flex printing"
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Вихристюк, Ольга Володимирівна. "Поліграфічне підприємство з дослідженням технології виготовлення етикеткової продукції". Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/46346.
Повний текст джерелаАнотація:
Пояснювальна записка до магістерської дисертації на тему
«Поліграфічне підприємство з дослідженням технології виготовлення
етикеткової продукції» складається з 112 сторінок, що містять в собі 7
розділів та підрозділи. Загальна кількість ілюстрацій становить 49, таблиць –
52, кількість джерел згідно з переліком посилань 33.
Магістерська дисертація складається з семи основних розділів, де
детально розкрито головні технічні, конструкторські особливості етикеток,
обрано необхідне обладнання та матеріали для виготовлення етикеткової
продукції. Проаналізовано всі процеси виготовлення етикеткової продукції,
починаючи від вибору способу друку, необхідного друкарського
устаткування, додрукарських процесів, технології виготовлення друкарських
форм, і закінчуючи післядрукарською обробкою.
Розроблено загальну блок-схему технологічних процесів виготовлення
етикеткової продукції. Розраховані основні техніко-економічні показники.
Проведений аналіз патентної інформації засвідчив, що розробки по
вдосконаленню технологій виготовленні етикеткової продукції проводяться й
надалі. Однак в межах таких тенденцій надто мало уваги приділено саме
методам контролю, що, безумовно, є актуальним напрямком подальших
наукових досліджень, так як дозволить суттєво покращити якість відтворення
поліграфічної продукції.
В експериментальній частині магістерської дисертації здійснено
постановку завдання дослідження, де визначено, що удосконалення процесу
виготовлення етикеткової продукції є необхідним для покращення технології
виготовлення етикеткової продукції, зокрема, було досліджено дефекти при
виготовленні етикеткової продукції та досліджено колірні показники
пантонних кольорів під час друкування накладу етикеткової продукції.The explanatory note to the master's dissertation on the topic "Printing company with research on the technology of manufacturing label products" consists of 112 pages, containing 7 sections and subsections. The total number of illustrations is 49, tables - 52, the number of sources according to the list of references 33. The master's dissertation consists of seven main sections, which reveal in detail the main technical, design features of labels, selected the necessary equipment and materials for the manufacture of label products. All processes of manufacturing label products are analyzed, starting from the choice of printing method, necessary printing equipment, pre-printing processes, technology of manufacturing printing plates, and ending with post-printing processing. The general block diagram of technological processes of production of label products is developed. The main technical and economic indicators are calculated. The analysis of patent information showed that the development of improved technologies for the manufacture of label products is carried out in the future. However, within such trends, too little attention is paid to control methods, which, of course, is an important area of further research, as it will significantly improve the quality of reproduction of printed products. In the experimental part of the master's dissertation the research task was set, where it was determined that the improvement of the label manufacturing process is necessary to improve the technology of label production, in particular, defects in label manufacturing were investigated.
Объяснительная записка к магистерской диссертации по «Полиграфическое предприятие с исследованием технологии изготовления этикеточной продукции» состоит из 112 страниц, содержащих 7 разделов и подразделы. Общее количество иллюстраций составляет 49, таблиц – 52, количество источников согласно ссылкам 33. Магистерская диссертация состоит из семи основных разделов, где подробно раскрыты главные технические, конструкторские особенности этикеток, выбрано необходимое оборудование и материалы для изготовления этикеточной продукции. Проанализированы все процессы изготовления этикеточной продукции, начиная от выбора способа печати, необходимого печатного оборудования, допечатных процессов, технологии изготовления печатных форм и заканчивая послепечатной обработкой. Разработана общая блок-схема технологических процессов изготовления этикеточной продукции. Рассчитаны главные технико-экономические характеристики. Проведенный анализ патентной информации показал, что разработки по совершенствованию технологий при изготовлении этикеточной продукции проводятся и в дальнейшем. Однако в рамках таких тенденций слишком мало внимания уделено именно методам контроля, что безусловно является актуальным направлением дальнейших научных исследований, так как позволит существенно улучшить качество воспроизведения полиграфической продукции. В экспериментальной части магистерской диссертации осуществлена постановка задачи исследования, где определено, что усовершенствование процесса изготовления этикеточной продукции необходимо для улучшения технологии изготовления этикеточной продукции, в частности, были исследованы дефекты при изготовлении этикеточной продукции и исследованы цветовые показатели пантонного цвета при печатании тиража.
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Holmvall, Martin. "Nip Mechanics, Hydrodynamics and Print Quality in Flexo Post-Printing." Doctoral thesis, Mittuniversitetet, Institutionen för naturvetenskap, teknik och matematik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-11347.
Повний текст джерела
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Mattio, Elodie. "Développement de systèmes d'analyse en flux imprimés en 3D pour le dosage de Pb, Cd et Hg dans les eaux." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0361.
Повний текст джерелаАнотація:
La quantification des métaux dans les milieux aquatiques est un enjeu majeur, au vu de leur toxicité élevée et de leurs nombreuses sources d’émission dans l’environnement. Dans cette optique, le développement de systèmes d’analyse en ligne portables et à bas coût va permettre de réaliser des contrôles répétés et automatisés sur site. Trois métaux ont été ciblés dans cette étude : le plomb, le cadmium et le mercure. Pour développer ces systèmes, l’impression 3D a été utilisée pour réduire les coûts de fabrication et permettre la conception de modules sur mesure. Trois systèmes ont été développés, selon la méthodologie suivante : dans un premier temps, l’échantillon va être photo-oxydé pour extraire les métaux de la matrice organique et minérale, puis les métaux ciblés vont être ensuite préconcentrés sur phase solide, élués et détectés en spectroscopie UV-Visible ou en fluorescence. Les choix de la phase solide, de l’éluant et du réactif de détection vont ainsi être déterminants pour la caractérisation sélective et sensible de chaque métal. Un premier système pour l'analyse du plomb a été développé, et se compose de trois modules imprimés en 3D, accueillant une colonne de résine, un mélangeur, et une cellule de détection optique. Un second système, sous la forme d’un lab-on-valve, permet la quantification du plomb et du cadmium. Enfin le troisième système, portant sur le mercure, intègre une pièce imprimée en 3D dont la surface a été greffée avec une molécule (dithizone carboxylate) permettant l'extraction sélective du mercure du milieu. Ces systèmes conduisent ainsi à de nouvelles perspectives pour le développement de systèmes en flux plus complexes imprimés en 3DMetals determination in aqueous samples is a major challenge nowadays, in the light of their high toxicity and their numerous emission sources into the environment. In this context, the development of on-line and low-cost analytical systems allows to carry out automated on-site measurements. Three metals (lead, cadmium and mercury) have been targeted in this study. 3D printing has been used in this study to reduce fabrication costs and to allow a tailor-made conception of the units. The developed flow systems in this study are based on the same analytical methodology: first, the sample is photo-oxidized to extract targeted metals from organic and mineral matrix of the sample. Then, metals are preconcentrated on a solid phase, then eluted and detected by UV-Visible or fluorescence spectroscopy. The choices of preconcentration solid phases, eluents, and detection reagents are decisive for the selective and sensitive characterisation of each metal. The first developed system concerns lead analysis, and consists of three 3D printed units, which contain a resin column, a mixing coil, and a spectroscopic flow-cell. The second system for lead and cadmium determination contains a 3D printed lab-on-valve with eight ports, two resin columns, and a mixing coil with baffles. Finally, the third system includes a 3D printed unit whose surface has been modified by grafting a molecule with high affinity for mercury (dithizone carboxylate). This 3D printed unit provides a selective extraction of mercury after modification of its surface. The systems thus developed allow to explore the possibilities of 3D printing for the development of more complex flow systems
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Bartzsch, Matthias. "Herstellung von Schottky-Dioden mittels Rolle-zu-Rolle-Verfahren." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-78462.
Повний текст джерелаАнотація:
Im Rahmen der vorliegenden Arbeit wurden Schottky-Dioden mittels Rolle-zu-Rolle-Verfahren hergestellt und charakterisiert. Die Dioden bestanden dabei aus einer Kathode (Aluminium oder Kupfer), die durch Sputtern aufgebracht wurde, einer Halbleiterschicht aus Polytriphenylaminen (PTPA3), die mittels Tiefdruck aufgebracht wurde und einer im Flexodruck hergestellten Anode (PEDOT:PSS, Pani oder Carbon Black). Aus elektrischer Sicht wiesen dabei Dioden mit Kupfer und Carbon Black die besten Eigenschaften auf. Mit Hilfe dieser Elektrodenmaterialien und bei Halbleiterschichtdicken von ca. 200 nm konnten Grenzfrequenzen der Dioden von über 1 MHz realisiert werden. Weiterhin wiesen diese Dioden eine gute Langzeitstabilität sowie eine gute Stabilität gegenüber UV-Licht, Feuchtigkeit und Temperatur aufAim of this work was to demonstrate that Schottky-Diodes can be fabricated by means of Roll-to-Roll-Methods and to characterize these diodes. The diodes consists of a sputtered cathode (Aluminum or Copper), a gravure printed semiconducting layer of Polytriphenylamine (PTPA3) and a flexo printed anode (PEDOT:PSS, Pani, Carbon Black). Best electrical characteristics were obtained with diodes consisting Copper and Carbon Black as electrodes. With a thickness of the semiconducting layer of ~200 nm diodes with a cut-off frequency above 1 MHz could be demonstrated. These diodes showed also a good stability when exposed to UV-light, moisture and temperature
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Mazauric, Serge. "Modèles spectraux à transferts de flux appliqués à la prédiction de couleurs sur des surfaces imprimées en demi-ton." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES064/document.
Повний текст джерелаАнотація:
La protection des documents fiduciaires et identitaires contre la fraude exige le développement d’outils de contrôle fondés sur des effets visuels sans cesse renouvelés, difficiles à contrefaire (même pour un expert ... de la contrefaçon !). Ce projet de recherche s’inscrit dans cette problématique et vise à apporter des solutions originales via l’impression de supports diffusants d’une part, et le développement de modèles de rendu visuel d’autre part. Les effets visuels recherchés sont des ajustements de couleurs entre les deux faces d’un imprimé lorsque celui-ci est observé par transparence devant une source lumineuse. Pour obtenir facilement des ajustements de couleurs quelles que soient les couleurs visées, il est capital d’avoir un modèle à disposition, permettant de calculer les quantités d’encre à déposer. Un modèle doit être capable de prédire les facteurs spectraux de réflexion et de transmission du support imprimé en décrivant les phénomènes de diffusion optique présents en pratique dans les couches d’encre et le support. Nous nous intéressons plus particulièrement aux imprimés translucides contenant des couleurs en demi-ton des deux côtés de la surface avec pour objectif de prédire le rendu visuel pour diverses configurations d’observation. Pour cela, nous proposons une nouvelle approche basée sur l’utilisation de matrices de transfert de flux pour prédire les facteurs spectraux de réflexion et de transmission des imprimés lorsqu’ils sont éclairés simultanément des deux côtés. En représentant le comportement optique des différents composants d’un imprimé par des matrices de transfert, la description des transferts de flux entre ces composantes s’en trouve simplifiée. Ce cadre mathématique mène à la construction de modèles de prédiction de couleurs imprimées en demi-ton sur des supports diffusants. Nous montrons par ailleurs que certains modèles existants, comme le modèle de Kubelka-Munk ou encore le modèle de Clapper-Yule, peuvent également être formulés en termes de matrices de transfert. Les résultats obtenus avec les modèles proposés dans ce travail mettent en évidence des qualités de prédiction équivalentes, voire supérieures, à celles qu’on retrouve dans l’état de l’art, tout en proposant une simplification de la formulation mathématique et de la description physique des échanges de flux. Cette simplification fait de ces modèles des outils de calcul qui s’utilisent très facilement, notamment pour la détermination des quantités d’encre à déposer sur les deux faces de l’imprimé afin d’obtenir des ajustements de couleursThe protection of banknotes or identity documents against counterfeiting demands the development of control tools based on visual effects that are continuously renewed. These visual effects become thus difficult to counterfeit even by an expert forger ! This research tries to deal with that issue. Its objective is to bring new solutions using on the one side, the printing of diffusing materials, and on the other side the development of visual rendering models that can be observed. The visual effects that are sought-after are the color matching on both sides of a printed document when observed against thelight. To easily obtain a color matching, whatever the colors that are aimed for, it is essential to have a model that helps in calculating the quantity of ink to be left on the document. A model must be used to predict the spectral reflectance and the transmittance factors of the printed document by describing the phenomena of optical diffusion really present in the ink layers and in the document. We shall focus our interest especially on translucent printed documents that have halftone colors on both sides. Our goal here is to predict the visual rendering in different configurations of observation. To that end, we are offering a new approach based on the use of flux transfer matrices to predict the spectral reflectance and transmittance factors of prints when they are simultaneously lit up on both sides. By representing with transfer matrices the optical behavior of the different components present in a printed document, we see that the description of flux transfer between these elements is thus simplified. This mathematical framework leads to the construction of prediction models of halftone printed colors on diffusing materials. We also show that some existing models, such as the Kubelka-Munk or the Clapper-Yule models, can also be formulated in transfer matrices terms. The results that we get with the models used in this work make apparent identical prediction quality and in some cases even better ones to the ones found in the state of the art, while offering a simplification of the mathematical formulation and the physical description of the flux transfer. This simplification thus transforms these models into calculation tools that can easily be used especially for the choice of quantities of ink that must be left on both sides of the document in order to obtain color matching
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Godard, Paul. "Parallélisation et passage à l'échelle durable d'une chaïne de traitement graphique pour l'impression professionnelle." Thesis, Strasbourg, 2019. https://publication-theses.unistra.fr/public/theses_doctorat/2019/Godard_Paul_2019_ED269.pdf.
Повний текст джерелаАнотація:
Les nombreuses avancées du vaste domaine de l’impression professionnelle ont permis la multiplication des objets imprimés dans nos quotidiens. Désormais, la flexibilité introduite par les procédés d’impression numérique promet d’associer les souhaits de personnalisation avec les avantages de la production de masse. La rapide évolution des usages et des technologies, caractérisée par des fermes d’impression toujours plus grandes et des presses numériques toujours plus rapides, pose des problèmes inédits aux systèmes informatiques actuels qui pilotent les imprimantes. Dans cette thèse, nous explorons de nouvelles techniques inspirées des systèmes de calcul haute performance afin d’accélérer l’exécution des traitements graphiques indispensables à l’impression numérique. Nous introduisons pour cela une architecture de calculs distribués flexible exploitant des techniques de traitement et de synchronisation optimisées. Nous détaillons les principes de fonctionnement et les subtilités de l’implémentation de nos travaux qui permettent de respecter les contraintes spécifiques des flux de données produits. Nous réalisons une évaluation complète de notre solution qui y démontre ses excellentes performances et sa viabilitéThe strong and continuous improvements in the professional printing field have led to the ubiquity of printed objects in our daily life. The flexibility introduced by the digital printing process promises to associate extensive customization with mass production. The quick growth of printing usages and technologies, illustrated by wider printer farms and faster digital presses, leads to original challenges for the computer system in charge of driving them. In this thesis, we explore new approaches inspired by the high performance computing field to speedup the graphics processing necessary to digital printing. To achieve this goal, we introduce a distributed system which provides the adequate flexibility and performance by exploiting and optimizing both processing and synchronization techniques. We present our architecture up to the subtle parts of its implementation which allows our solution to meet the specific constraints on generating streams for printing purpose. We perform a complete evaluation of our solution and provide experimental evidence of its great performance and viability
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Chen, Shih-Wu, and 陳世武. "Optimal parameter design for UV Flexo printing." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12728903615891251531.
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碩士逢甲大學
工業工程與系統管理學研究所
97
The competition in the current world market has forced the manufacturers to produce products with low cost, high quality and matching the environmental protection demand. Friendly production environment, high quality and high efficiency are crucial factors in printing industry. Ultraviolet (UV) printing can match this demand. The UV dosage energy is the most important factor to print high quality product with high production rate. The larger UV dosage energy, the better the printing quality is. The purpose of this research is to improve the dosage energy by randomized complete block design. Two factors are reflector width and the height between lamp and substrate. The blocking factor is the measuring point (left, center and right) of the input material. The results show that the blocking factor is the most significant factor. It is obviously that the center point is much larger than the other two sides. Besides, the height and the interaction of height and reflector width have minor effect. Finally, the optimal parameter design is to change the distance from 78MM to 76MM and the reflector width remain as initial setting. The dosage energy is improved from 281mJ/cm2 to 306mJ/cm2 after the experiment. Thus, the UV Flexo printing quality is improved.
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Bartzsch, Matthias. "Herstellung von Schottky-Dioden mittels Rolle-zu-Rolle-Verfahren." Doctoral thesis, 2010. https://monarch.qucosa.de/id/qucosa%3A18557.
Повний текст джерелаАнотація:
Im Rahmen der vorliegenden Arbeit wurden Schottky-Dioden mittels Rolle-zu-Rolle-Verfahren hergestellt und charakterisiert. Die Dioden bestanden dabei aus einer Kathode (Aluminium oder Kupfer), die durch Sputtern aufgebracht wurde, einer Halbleiterschicht aus Polytriphenylaminen (PTPA3), die mittels Tiefdruck aufgebracht wurde und einer im Flexodruck hergestellten Anode (PEDOT:PSS, Pani oder Carbon Black). Aus elektrischer Sicht wiesen dabei Dioden mit Kupfer und Carbon Black die besten Eigenschaften auf. Mit Hilfe dieser Elektrodenmaterialien und bei Halbleiterschichtdicken von ca. 200 nm konnten Grenzfrequenzen der Dioden von über 1 MHz realisiert werden. Weiterhin wiesen diese Dioden eine gute Langzeitstabilität sowie eine gute Stabilität gegenüber UV-Licht, Feuchtigkeit und Temperatur auf.:Inhaltsverzeichnis
1 Einleitung
2 Metall-Halbleiter-Kontakt
2.1 Idealer Metall-Halbleiter-Kontakt
2.2 Metall-Halbleiter-Kontakt unter Spannung
2.3 Realer Metall-Halbleiter-Kontakt
2.3.1 Metall-Halbleiter-Kontakte ohne Grenzflächenzustände
innerhalb der Bandlücke
2.3.2 Metall-Halbleiter-Kontakt mit Grenzflächenzuständen
2.4 Grenzflächen zwischen Metallen und organischen Materialien
2.5 Transportmechanismen / -modelle
2.5.1 Ladungstransport in organischen Halbleitern
2.5.2 Thermionische Emission
2.5.3 Fowler-Nordheim-Tunneln
2.5.4 Raumladungsbegrenzte Ströme
2.6 Poole-Frenkel Effekt
3 Stabilität organischer Materialien
3.1 Einfluss von Sauerstoff
3.2 Einfluss von Wasser
3.3 Einfluss von chemischen Reaktionen
3.4 Einfluss von elektrischem Stress
3.5 Einfluss von Licht
3.6 Einfluss von Struktur- und Morphologieänderungen
3.7 Einfluss von kombinierten Effekten
3.8 Einfluss von Barriereschichten
4 Schottky-Dioden
4.1 Allgemeiner Aufbau
4.2 Stand der Technik
4.3 Anforderungen an Materialien für Schottky-Dioden
4.3.1 Kathode
4.3.2 Halbleiter
4.3.3 Anode
4.4 Gleichrichter
4.5 Logische Schaltungen mit Dioden
5 Rolle-zu-Rolle-Verfahren / Druckverfahren
5.1 Übersicht Druckverfahren / Beschichtungsverfahren
5.2 Bewertung der Verfahren für die Herstellung von Schottky-Dioden
6 Versuchsdurchführung
6.1 Druckversuche
6.1.1 Genutzte Druckmaschinen
6.1.2 Verwendete Materialien
6.2 Messverfahren
6.2.1 Morphologische Charakterisierung
6.2.2 Elektrische Charakterisierung
6.2.3 Strom-Spannungs-Charakterisitik
6.2.4 Kapazitätscharakteristik
6.2.5 Elektrische Eigenschaften der Anodenmaterialien
7 Ergebnisse der Druckversuche
7.1 Einfluss der Lösungsmittel
7.2 Einfluss der Druckgeschwindigkeit
7.3 Druck der Anode
8 Elektrische Charakterisierung der Dioden
8.1 Vergleich der Elektrodenmaterialien
8.2 Strom-Spannungs-Kennlinie in Sperrrichtung
8.3 Gleichmäßigkeit der Strom-Spannungs-Charakteristik
8.4 Einfluss des Lösungsmittelgemischs
8.5 Einfluss der Trocknungstemperatur
8.6 Kapazitätscharakteristika
9 Stabilität
9.1 Langzeitstabilität
9.2 Hysterese
9.3 Einfluss der Temperatur
9.4 Einfluss von Feuchtigkeit
9.5 Einfluss von Licht
9.6 Einfluss von elektrischem Stress
10 Anwendungen
10.1 Gleichrichter
10.2 Logische Schaltungen mit Dioden
11 Zusammenfassung
Literaturverzeichnis
Abbildungsverzeichnis
Tabellenverzeichnis
Formel- und Symbolverzeichnis
Abkürzungsverzeichnis
Danksagung
Lebenslauf
Veröffentlichungen
EigenständigkeitserklärungAim of this work was to demonstrate that Schottky-Diodes can be fabricated by means of Roll-to-Roll-Methods and to characterize these diodes. The diodes consists of a sputtered cathode (Aluminum or Copper), a gravure printed semiconducting layer of Polytriphenylamine (PTPA3) and a flexo printed anode (PEDOT:PSS, Pani, Carbon Black). Best electrical characteristics were obtained with diodes consisting Copper and Carbon Black as electrodes. With a thickness of the semiconducting layer of ~200 nm diodes with a cut-off frequency above 1 MHz could be demonstrated. These diodes showed also a good stability when exposed to UV-light, moisture and temperature.:Inhaltsverzeichnis 1 Einleitung 2 Metall-Halbleiter-Kontakt 2.1 Idealer Metall-Halbleiter-Kontakt 2.2 Metall-Halbleiter-Kontakt unter Spannung 2.3 Realer Metall-Halbleiter-Kontakt 2.3.1 Metall-Halbleiter-Kontakte ohne Grenzflächenzustände innerhalb der Bandlücke 2.3.2 Metall-Halbleiter-Kontakt mit Grenzflächenzuständen 2.4 Grenzflächen zwischen Metallen und organischen Materialien 2.5 Transportmechanismen / -modelle 2.5.1 Ladungstransport in organischen Halbleitern 2.5.2 Thermionische Emission 2.5.3 Fowler-Nordheim-Tunneln 2.5.4 Raumladungsbegrenzte Ströme 2.6 Poole-Frenkel Effekt 3 Stabilität organischer Materialien 3.1 Einfluss von Sauerstoff 3.2 Einfluss von Wasser 3.3 Einfluss von chemischen Reaktionen 3.4 Einfluss von elektrischem Stress 3.5 Einfluss von Licht 3.6 Einfluss von Struktur- und Morphologieänderungen 3.7 Einfluss von kombinierten Effekten 3.8 Einfluss von Barriereschichten 4 Schottky-Dioden 4.1 Allgemeiner Aufbau 4.2 Stand der Technik 4.3 Anforderungen an Materialien für Schottky-Dioden 4.3.1 Kathode 4.3.2 Halbleiter 4.3.3 Anode 4.4 Gleichrichter 4.5 Logische Schaltungen mit Dioden 5 Rolle-zu-Rolle-Verfahren / Druckverfahren 5.1 Übersicht Druckverfahren / Beschichtungsverfahren 5.2 Bewertung der Verfahren für die Herstellung von Schottky-Dioden 6 Versuchsdurchführung 6.1 Druckversuche 6.1.1 Genutzte Druckmaschinen 6.1.2 Verwendete Materialien 6.2 Messverfahren 6.2.1 Morphologische Charakterisierung 6.2.2 Elektrische Charakterisierung 6.2.3 Strom-Spannungs-Charakterisitik 6.2.4 Kapazitätscharakteristik 6.2.5 Elektrische Eigenschaften der Anodenmaterialien 7 Ergebnisse der Druckversuche 7.1 Einfluss der Lösungsmittel 7.2 Einfluss der Druckgeschwindigkeit 7.3 Druck der Anode 8 Elektrische Charakterisierung der Dioden 8.1 Vergleich der Elektrodenmaterialien 8.2 Strom-Spannungs-Kennlinie in Sperrrichtung 8.3 Gleichmäßigkeit der Strom-Spannungs-Charakteristik 8.4 Einfluss des Lösungsmittelgemischs 8.5 Einfluss der Trocknungstemperatur 8.6 Kapazitätscharakteristika 9 Stabilität 9.1 Langzeitstabilität 9.2 Hysterese 9.3 Einfluss der Temperatur 9.4 Einfluss von Feuchtigkeit 9.5 Einfluss von Licht 9.6 Einfluss von elektrischem Stress 10 Anwendungen 10.1 Gleichrichter 10.2 Logische Schaltungen mit Dioden 11 Zusammenfassung Literaturverzeichnis Abbildungsverzeichnis Tabellenverzeichnis Formel- und Symbolverzeichnis Abkürzungsverzeichnis Danksagung Lebenslauf Veröffentlichungen Eigenständigkeitserklärung
Книги з теми "Flex printing"
1
The anilox roll: Heart of the flexo process. Plainview, NY: Jelmar Pub., 1997.
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2
The Flexo environment. Ronkonkoma, NY: Foundation of Flexographic Technical Association, 2002.
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3
Handbook on printing technology : (offset, flexo, gravure, screen, digital, 3D printing) - 3. edición revisada. Asia Pacific Business Press, 2017.
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4
Dussinger, John. Samuel Richardson and the Epistolary Novel. Edited by Alan Downie. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199566747.013.011.
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Despite having turned 50 before publishing his first novel, Samuel Richardson’s literary career began already in his youth as a precocious letter-writer and developed during the 1720s after launching his London printing business. Richardson’s letter-writing style stresses continual flux as living experience, and this emphasis on temporality is continued in his three experimental ‘histories’ of characters struggling under the pressure of momentary perceptions. As a ‘dramatic’ novel, Clarissa exploits the resources of theatrical presentation as direct discourse and of narrative storytelling as indirect and free indirect discourse. Its epistolary form obviates an omniscient narrator and, except for an occasional ‘editor’, depends wholly on the individual voices that comprise piecemeal the story. This focus on temporality, however, has ultimately a religious and moral dimension: beyond the sound and the fury of present time is an intimation of eternal order.
Частини книг з теми "Flex printing"
1
Bassemir, R. W., and R. Krishnan. "Surface Phenomena in Waterbased Flexo Inks for Printing on Polyethylene Films." In Surface Phenomena and Fine Particles in Water-Based Coatings and Printing Technology, 27–34. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3812-7_2.
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Sharma, Mahendra K., and Hieu D. Phan. "Water-Based Flexo and Gravure Inks Containing Eastman AQ Polyesters." In Surface Phenomena and Additives in Water-Based Coatings and Printing Technology, 27–41. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-2361-5_3.
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3
Gu, Ping, Quanhui Tian, Yan Liu, and Yun Gong. "Study of High-Definition (HD)—Flexo Halftoning Based on the Region Growth and Segmentation Algorithm (RGSA)." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 316–20. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_46.
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Yuki, Kazuhisa. "Heat Transfer Enhancement Using Unidirectional Porous Media under High Heat Flux Conditions." In Porous Fluids - Advances in Fluid Flow and Transport Phenomena in Porous Media. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96594.
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In this chapter, new heat transfer enhancement technologies with unidirectional porous metal called “EVAPORON” and “Lotus’ Breathing” are introduced to remove and manage heat from high heat flux equipment. The unidirectional porous metals introduced here can be easily fabricated by unique techniques such as mold casting technique, explosive welding technique, and 3D printing technique. First of all, many kinds of porous media, which have been introduced by the author so far as a heat transfer promoter, are compared each other to clarify what kind of porous metal is more suitable for high heat flux removal and cooling by focusing on the permeability and the effective thermal conductivity. For the practical use of the unidirectional porous copper with high permeability and high thermal conductivity, at first, heat transfer performance of two-phase flow cooling using a heat removal device called “EVAPORON” is reviewed aiming at extremely high heat flux removal beyond 10 MW/m2. We have been proposing this device with the unidirectional porous copper fabricated by 3D printing technique as the heat sink of a nuclear fusion divertor and a continuous casting mold. Second, two-phase immersion cooling technique called “Lotus’ Breathing” utilizing “Breathing Phenomenon” is introduced targeting at thermal management of various electronics such as power electronics and high performance computers. The level of the heat flux is 0.1 MW/m2 to 5 MW/m2. In addition, as the other heat transfer enhancing technology with unidirectional porous metals, unidirectional porous copper pipes fabricated by explosive welding technique are also introduced for heat transfer enhancement of single-phase flow.
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"Towards a Typology of Greek Books Printed in Sixteenth-Century Paris: Placing Teaching into the Printing Landscape." In When Greece Flew across the Alps, 49–71. BRILL, 2021. http://dx.doi.org/10.1163/9789004181892_005.
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Hotson, Howard. "Emendation." In The Reformation of Common Learning, 336–78. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780199553389.003.0010.
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After Alsted and Bisterfeld fled Herborn for Transylvania in 1629, their work on perfecting the Encyclopaedia published in Herborn the following year continued uninterrupted for a quarter century. Alsted overhauled his topical encyclopaedia in a manuscript which was returned to Herborn in 1648 and destined for printing around 1650 but which has subsequently disappeared. He devoted additional work to recasting the post-Ramist Encyclopaedia in quasi-Lullist combinatorial form, leaving a set of extremely compact and provocative works in manuscript which were further developed by Bisterfeld and published by Heereboord and others after his death in 1655 (section 10.i). In 1674 a more modest proposal to overhaul the Encyclopaedia was published by Georg Hieronymus Welsch, a leading member of the Academia Naturae Curiosorum. The process in which this project was overwhelmed by a huge range of polyhistorical interests illustrates some of the ways in which encyclopaedism had been side-lined by other intellectual priorities in the course of the seventeenth century (section 10.ii). For Leibniz, the project of replacing Alsted’s Encyclopaedia with a more intellectually coherent and philosophically up-to-date work of the same kind became a lifelong aspiration; but with the end of the great educational boom of the long sixteenth century, the conditions which had nurtured Alsted’s life-long project had disappeared (section 10.iii).
Тези доповідей конференцій з теми "Flex printing"
1
Shun, Cheong Yew, Ko Bong Sang, Mohd Jeffery Bin Manaf, Kader Ibrahim, and Zul Azhar Zahid Jamal. "Contact Hole Printing in Binary Mask by FLEX Technique." In 2006 IEEE International Conference on Semiconductor Electronics. IEEE, 2006. http://dx.doi.org/10.1109/smelec.2006.381098.
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2
Peters, Brian. "Flex.Molds." In AIA/ACSA Intersections Conference. ACSA Press, 2015. http://dx.doi.org/10.35483/acsa.aia.inter.15.16.
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New 3D printing materials are currently being developed and released at a rapid pace, including flexible plastic filament that was recently introduced to the desktop 3D printing market. Flex. Molds explores the potential of using this material in conjunction with standard 3D printing techniques to improve the conventional fabrication process of precast concrete. It poses the question: can 3D printing formwork for concrete alleviate some of the problems associated with traditional casting by reducing fabrication steps and increasing geometric flexibility?
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Tsenev, Valentin. "Sustainable and Secure Soldering of Complex Components with Package BGA, LGA, Flip Chip, FI WLCSP, FO WLCSP to Star Flex PCB Using Hybrid Printing." In 2019 42nd International Spring Seminar on Electronics Technology (ISSE). IEEE, 2019. http://dx.doi.org/10.1109/isse.2019.8810279.
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Chen, Ruijun, and Daniel F. Baldwin. "Fundamental Analyses of Smart Tooling for Assembly of Thin Flexible Circuit and Board Systems." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0917.
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Abstract Flexible nature of flexible circuits/boards poses new fixture tooling challenges for standard surface mount assembly equipment. The flexible substrates experience significant transverse displacements under perpendicular assembly forces during solder paste printing and component placement processes. The displacements result in misregistration of the component leads and substrate bond pads, leading to assembly process defects. Solder reflow process further complicates the issue due to the thermo-mechanical warpage induced. Reengineered and specialized dedicated tooling for fixturing flexible substrates in standard assembly equipment is becoming extremely important. This paper focuses on developing analysis methodologies and theories for implementing Smart Tooling. The primary goals being to determine the impact of fixturing on assembly process quality and to determine optimum fixturing configurations for thin flexible circuit board assemblies based on circuit board design data. A mathematical model to describe both transverse and perpendicular displacements of flex substrates is developed, and its close-form solution for transverse displacements is obtained. Using a “near” optimum fixturing configuration to minimize transverse displacements is verified.
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Lall, Pradeep, Hyesoo Jang, Jinesh Narangaparambil, Kartik Goyal, and Curtis Hill. "Additively Printed Flexible Temperature Sensor for Wearable Applications." In ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ipack2021-74071.
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Abstract The flexible sensor has the capability to be mounted on any curved surfaces of applications and be used for portable devices. Additively printed sensors have received attention owing to their compact design and ability of application to non-planar surfaces. Wearable applications require capability of integration into a variety of surfaces with ability to flex, fold, twist and stretch under the stresses of daily motion. There is scarcity of data on the interaction of the process parameters with the realized performance. In addition, there is need for data focused on sensor accuracy, repeatability, and reliability. In this study, experimental analysis on function of the fabricated sensing board is conducted. The temperature sensors are made by direct write printing method with nScrypt printer. A calibration of the sensors has been conducted to confirm that resistance is well related to actual temperature and find TCR (temperature coefficient to resistance). The evolution of resistance has been correlated with the environmental temperature. The sensor hysteresis has been quantified using upswing and downswing of the environmental temperature. In addition, the effect of humidity on the temperature sensor accuracy and performance has been quantified. The effect of a polymide coat on the sensor to prevent humidity effects has also been quantified.
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Hahlweg, Cornelius, Lukas Pescoller, and Wenjing Zhao. "Inspection and characterization of flexo-printing plates." In SPIE Optical Engineering + Applications, edited by G. Groot Gregory and Arthur J. Davis. SPIE, 2013. http://dx.doi.org/10.1117/12.2024318.
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Anwar, Chems, Abdeslam Benamara, and Abdelhak Kaci. "Flax Fibers Composite Made up by 3D Printing." In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.842.
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This preliminary work deals with potential use of additive manufacturing to print a bio-based composite. For this, mixture of clay and flax fibers was used. First, we proceeded to the optimization of the printability conditions by ensuring that the water dosage allows a good extrusion with a continuous volume flow rate. Moreover, the yield stress obtained must allow to deposit several layers without loss of stability. This criterion was verified and then we printed a square element of 20 cm length where 4x4x16cm3 specimens were cut and used to evaluate bending strength. We have shown that under some conditions we are able to print with different layers this composite. To improve the limit height of a printed element, additional tests are necessary to increase the resistance of this type of composite. This study will be continued by Optimizing mix design using other additives and introducing of reinforcement.
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Dedijer, Sandra, Magdolna Pál, Ivana Tomić, Stefan Poljak, Živko Pavlović, Ivana Jurič, and Neda Milić Keresteš. "Statistical analysis of the influence of print run on surface roughness of digital flexo printing plates’ solid tone areas." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p30.
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In this study we have aimed to present statistical evaluation of changes in the surface roughness of the solid tone areas on CtP flexo printing plate in dependence of print run. Changes in flexo plate surface roughness is influenced by the plate-making process, printing pressure and speed, the interaction with the ink and printing substrate and by the wear of the printing plate due to long print-runs. Thus, the aim of this research was to evaluate the changes in the amplitude surface roughness parameters (Ra, Rp, Rv and Rz), between the printing plates used for different print runs. In the experiment, we have employed three sets of CtP flexo printing plates, for three colors-cyan, magenta and blue. The first set was not used for printing, the second was used to print 7 rolls of substrate and the third is used to print 11 rolls of printing substrate. The amplitude surface roughness parameters were compared by applying independentsamples t-test method using the software SPSS (Statistical Package for Social Science) with a 0.05 significance level. Statistical analysis revealed that the difference between the amplitude surface roughness parameters measured on CtP flexo printing plates are significant with a 95% confidence level, whereas the statistical significance pointed out that with the longer print runs, the difference will be strongly expressed.
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Parraman, Carinna. "Colour in flux: describing and printing colour in art." In Electronic Imaging 2008, edited by Reiner Eschbach, Gabriel G. Marcu, and Shoji Tominaga. SPIE, 2008. http://dx.doi.org/10.1117/12.766612.
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Hebert, Mathieu, Serge Mazauric, and Thierry Fournel. "Flux transfer model for designing visual effects by halftone printing." In 2015 14th Workshop on Information Optics (WIO). IEEE, 2015. http://dx.doi.org/10.1109/wio.2015.7206918.
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