Thesis about life and work of a printer and a woodcutter Michael Peterle is focused mainly on his assumed woodcutting activity (he was active between years 1562-1588). It is based on following assumption: although Michael Peterle did not sign his woodcuts, he illustrated portion of his prints. His printing office produced multitude of topical compositions and some interesting illustrated books. Photodocumentation and description of woodcutting illustrations and decoration (according to Soupis tisků Michaela Peterla staršího a jeho nástupců by Pravoslav Kneidl and more recent sources) was created during writing of this thesis. Attention was also focused on context of usage of illustrations. Afterwards Illustrations and decoration of Peterle's competition in the Czech Republic and Germany were examined. Conducted research showed, that Michael Peterle was not woodcutter, but only a colorist and a printer. This thesis provides another view on printing production in the second half of the 16th century. Key words: Peterle, Michael; printer; bookprinting; woodcut; illustration; decoration

År 2017 genomfördes ett projekt att vidareutveckla en äldre 3D-skrivare för att skapa en större och mer robust skrivare. Denna 3D-skrivare blev tyvärr aldrig blev färdigställd och med ett ökat behov av tillverkning av komplexa prototyper fanns behovet att färdigställa 3D-skrivaren. Detta arbete startades genom att undersöka 3D-skrivarens komponenter och komplettera med det som saknades. Styrkortet Duet 2 jämfördes mot andra styrkort för att undersöka ifall det var tillräckligt till 3D-skrivaren. En pekskärm och expansionskort kompletterades då till styrkortet. Inbyggd programvara till styrkortet saknades så detta uppdaterades och ställdes in korrekt. Olika typer av inbyggd programvara jämfördes även. En inkapsling för byggytan konstruerades av plexiglas för att skydda mot drag från fönster och ventilation. Styrkort monterades även i en separat inkapsling med tillhörande fläktar för att säkerställa funktion. En PEI byggyta och silikonvärmeplatta monterades på byggplattan och kopplades in med ett halvledarrelä till styrkortet. Med alla komponenter monterades provkördes slutligen 3D-skrivaren och kvalitetstestades grundligt med en #3Dbenchy i 250% skala. Resultatet av projektet blev vidareutvecklad och färdigställd 3D-skrivare i storformat kapabel att tillverka avancerade 3D-utskrifter med godkänd kvalitet. / In 2017, a project was carried out to further develop an older 3D printer to create a larger and more robust printer. This 3D-printer was unfortunately never completed and with an increased need to manufacture complex prototypes there was a need to complete the 3D-printer. This work was started by examining the 3D-printer's components and supplementing with what was missing. The Duet 2 control board was compared against other control boards to investigate if it was sufficient for the 3D-printer. A touch screen and expansion card were then added to the control board. Firmware for the control board was missing so this was updated and set up correctly. Different types of firmware were also compared. An enclosure for the print bed was constructed from Plexiglas to protect against drafts from windows and ventilation. Control boards were also mounted in a separate compartment with associated fans to ensure correct function. A PEI build surface and silicon heater pad were mounted on the build plate and connected with a solid-state relay to the control board. With all the components mounted the 3D printer was test run and quality tested thoroughly with a #3Dbenchy at 250% scale. The result of the project was a further developed and completed 3D printer in large-format capable of producing advanced 3D-prints with adequate quality.

京都大学 / 新制・課程博士 / 博士(医学) / 甲第24481号 / 医博第4923号 / 新制||医||1063(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 高橋 淳, 教授 髙橋 良輔, 教授 井上 治久 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM

Braille is a writing system that uses tactile dots in a predetermined order which, in relation to each other, represent different letters in the alphabet. This writing system makes it possible for people with visual impairments to take part of the written media. But the availability of home based braille printers is limited and these printers are often expensive. The purpose of this project is to investigate if it is possible to build a home based braille printer for a low cost using microcontrollers, and thereby making it more accessible to people with visual impairment. In order to achieve this, a prototype was built using an microcontroller together with stepper motors and a solenoid. These components were then controlled by code through user input and translated to required movements. Each switch case then calls a set of functions that activates the steppers and the solenoid in the order needed to get the desired character. In the time frame given, the project resulted in a prototype able to print out the input it was given. As for the cost of building your own Braille printer in comparison to buying one on the market highly depends on what processing machines are accessible. / Braille är ett skrivsystem som använder taktila prickar i en förbestämd ordning i förhållande till varandra som representerar olika bokstäver i alfabetet. Detta skrivssystem gör det möjligt för personer med nedsatt syn att ta del av de skriftliga medierna. Men tillgången av hembaserade braille-skrivare är begränsad och dessa skrivare är ofta dyra. Syftet med detta projekt är att undersöka om det är möjligt att bygga en hembaserad braille-skrivare till en låg kostnad med hjälp av mikrokontroller och därmed underlätta för personer med nedsatt syn. För att uppnå detta byggdes en prototyp med en mikrokontroll tillsammans med stegmotorer och en solenoid. För att styra dessa komponenter skrevs en kod som tar in information från vad som skrivits i Arduinos serial monitor och kopplar sedan detta till specifika switch cases. Varje switch case anropar sedan en uppsättning funktioner som aktiverar stegmotorerna och solenoiden i den ordning som behövs för att få önskad bokstav. Med den givna tidsramen resulterade projektet i en prototyp som kunde skriva ut det input den var given. Vad det gäller kostnaden för att bygga en Braille-skrivare på egen hand jämfört med att köpa en på marknaden beror mycket på vilka bearbetningsmaskiner som är tillgängliga.

Throughout history, the spread of microorganisms has caused much damage including infectious diseases and deaths. Ever since humans realized the impact of bacteria especially on population health many efforts have been done to combat the spread of pathogens. Textiles, as suitable environments for the growth of microorganisms are one of the major sources of epidemics. Therefore, producing antibacterial textiles can lessen the chances of transmission of microorganisms. In spite of effective protection antibacterial textiles offer, lack of comfort can result in less interest in the products from the users. The aim of this project is to use valve-jet printing as a resource-efficient finishing method to produce antibacterial textiles and measure its effect on comfort properties. As a natural, non-toxic, and biodegradable antibacterial agent, chitosan was chosen to be printed on cotton fabric. An ink with 0.5 w/v% concentration of chitosan dissolved in 1.5v/v% acetic acid was prepared and printed on cotton fabric through ChromoJet printer. The fabric was cured at 150°C for 1 minute to stabilize the chitosan on cotton. Three types of printed fabrics were produced with different number of printing passes. The samples were characterized by various methods to investigate the performance of printed chitosan ink on the antibacterial and comfort properties of the cotton fabric. Results indicate a successful printing of chitosan ink on cotton fabric through valve-jet printing method. Results further showed that multiple printing passes of chitosan ink on cotton fabric can result in higher antibacterial activity. However, with excessive increase of chitosan, the fabric compromises the hand feel and softness. Results also showed an increase in air permeability with the increment in the amount of chitosan on the cotton fabric, whereas capillary rise decreased with the increase of chitosan amount. Contact angle measurement and hydrostatic pressure test showed that between the printed and not-printed samples no big difference was observed in terms of hydrophilicity. The result of the thesis is of great importance as they introduce new printing process for the fabrication of antibacterial textile with comfort properties for various applications.

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No description available.

Detta examensarbete handlar om framställandet av en dokumentation för konstruktörer inom området 3D-skrivning. Arbetet är ett uppdrag från elbilstillverkaren Ecoist i syftet att underlätta för företag med begränsad kunskap och erfarenhet inom 3D-utskrifter att utnyttja tillverkningsmetoden för sina produkter. Dokumentationen skall innehålla riktlinjer för materialval, konstruktionsprinciper, och inställningar för 3D-utskrifter. För att begränsa arbetet till tidsramen läggs fokus på en typ av skrivare. Den valda typen är FDM eftersom det är den bedöms vara mest tillgängliga, både i pris och utbud. De material och dess egenskaper som betonas i dokumentationen är ASA, PETG, PLA, PP och TPU. Det huvudsakliga arbetet kommer främst innefatta faktainsamling och sammanställning från befintliga information, men även laborationer med 3D-skrivare. Kapitelindelningen i dokumentationen är strukturerad för att följa konstruktörens arbetsprocess. Den inleds med materialval, fortsätter med konstruktion och avslutas med inställningar för 3D-skrivare. I materialegenskaper behandlas de grundläggande egenskaperna hos olika material som används inom 3D-utskrift, med särskilt fokus på deras hållfasthet, miljöpåverkan, användningsområde samt för- och nackdelar. Konstruktionsriktlinjer handlar om utformning av detaljer, inklusive minsta detaljtjocklek, hantering av överhäng, fasning, efterbearbetning, integrering av fästelement samt toleranser mellan närliggande delar. Fokus ligger på att säkerställa att detaljerna är konstruerade för att vara hållbara och funktionella efter tillverkning med 3D-skrivare. Inställningar för 3D-skrivare handlar om STL-filer, olika typer av ifyllnadsmönster samt vanliga defekter och åtgärder för att motverka dem. Vidare behandlas materialspecifika inställningar för optimal justering av 3D-skrivaren. Vid utformningen av dokumentet läggs mest fokus på utseende och läsbarhet, samt ordning och struktur genom färgval, text/tabellspresentation och anpassandet av dokumentet för både fysiskt och digitalt exemplar. Hela dokumentationen finns i bilaga 1. / This thesis focuses on creating documentation for designers in the field of 3D printing. The project is commissioned by the electric car manufacturer Ecoist with the aim of helping companies with limited knowledge and experience in 3D printing to utilize this manufacturing method for their products. The documentation will include guidelines for material selection, design principles, and 3D printing settings. To fit the project within the given timeframe, the focus is limited to one type of printer. The selected type is FDM, as it is considered the most accessible in terms of price and availability. The materials and their properties emphasized in the documentation are ASA, PETG, PLA, PP, and TPU. The main work will primarily involve gathering and compiling information from existing sources, but also conducting experiments with 3D printers. The chapters in the documentation are structured to follow the designer's workflow. It begins with material selection, continues with design, and concludes with 3D printer settings. In material properties, the basic characteristics of different materials used in 3D printing are covered, with a particular focus on their strength, environmental impact, areas of use, as well as their advantages and disadvantages. Design guidelines involve the configuration of details, including minimum detail thickness, handling of overhangs, chamfering, post-processing, integration of fasteners, and tolerances between adjacent parts. The focus is on ensuring that the details are designed to be durable and functional after manufacturing with a 3D printer. 3D printer settings cover STL files, different types of infill patterns, and common defects along with countermeasures to avoid them. Furthermore, material-specific settings for optimal adjustment of the 3D printer are presented. In the design of the document, the emphasis is on appearance and readability, as well as order and structure through the choice of colors, text/table presentation, and adapting the document for both physical and digital copies. The entire documentation is included in Appendix 1.

The domain-specific language allows for describing problems of a concrete domain, for which the language is created. This fact implies that a number of languages of this kind grows with a number of problem domains. The use of domain-specific languages brings a necessity to pretty-print these languages, where the concept of pretty-printing consists of code formatting and syntax highlighting. One of tools that allow for creating domain-specific languages is the Xtext framework, which offers only a limited range of tools that are able to define a configuration for pretty-printing. Moreover, these tools are hardly understandable because they are confusing and requires knowledge of Xtext's internals. Thus this thesis introduces a new way of pretty-printing domain-specific languages. The way is based on declarative definition of formatting rules. Furthermore, this thesis helps a user to create formatting rules by utilizing nontrivial heuristics.

Identificação de Dispositivos por Radiofrequência, do inglês, Radio Frequency Identification Device (RFID), é uma tecnologia para identificação, rastreamento e gerenciamento de produtos, animais e até mesmo pessoas sem a necessidade de um campo visual. Com o objetivo de alcançar custos menores e a utilização de processos de fabricação menos agressivo ao meio ambiente, tornou-se importante o desenvolvimento de novos tipos de etiquetas (tags). Em vista disso, a fabricação de antenas impressas compactas usando tinta condutiva, representa uma boa opção. O objetivo dessa pesquisa é o projeto e fabricação de antenas impressas sobre substratos flexíveis utilizando tinta condutiva composta de nanopartículas de prata. O desenvolvimento deste tipo de etiquetas é justificado principalmente pelos seguintes motivos. Primeiro, o processo reduz o uso de agentes químicos comumente empregados na fabricação convencional, levando a uma significativa redução no impacto ambiental. Segundo, a fabricação utilizando substratos como, por exemplo, papel ou polímero, reduz substancialmente o custo final da etiqueta. Estudos teóricos e práticos, juntamente com simulações eletromagnéticas foram realizados. Dois processos de prototipagem da etiqueta foram executados: um utilizando uma impressora jato de tinta que funciona propelindo gotas de tinta sobre o substrato e o outro utilizando serigrafia ou silkscreen printing que é muito prático para imprimir formas geométricas através de uma tela de fios trançados. Esses métodos de impressão permitiram a produção rápida da antena sem a necessidade de máscaras de fotolitografia, como é amplamente utilizado na indústria eletrônica. Quatro protótipos foram produzidos e medidas foram realizadas para verificar a viabilidade da utilização dessas etiquetas impressas em relação à sua operação, a confiabilidade das informações armazenadas e a troca de dados com o leitor RFID via interface aérea. Os resultados práticos foram comparados com os obtidos de etiquetas comerciais, onde foi possível verificar que a antena fabricada com tinta condutiva é capaz de capturar e radiar ondas eletromagnéticas de forma eficiente, resultando em uma troca de dados confiáveis através da interface aérea. / Radio Frequency Identification Device (RFID), it is a technology using electromagnetic waves for identifying, tracking and management of products, animals and even people without requiring a visual field. Aiming at achieving low costs and using less aggressive manufacturing processes to the environment, it has become important to develop new types of RFID tags. In view of that, manufacturing compact printed antennas using conductive ink represents a good option. The goal of this research is the design of printed antennas on flexible substrates using silver nanoparticles ink. The developing of this type of tags is justified mainly by the following reasons. First, the process reduces the use of chemical agents commonly employed in conventional manufacturing leading to a significant reduction of the environmental impact. Second, the fabrication using substrates such as paper and polymer foils, substantially reduces the final cost of the tags. Theoretical and practical studies along with electromagnetic simulations were conducted. Two process of RFID prototyping were performed: one using an inkjet printer that operates by propelling particles of conductive ink onto the substrate and another using silkscreen printing that is a very practical method to print geometric forms through a twisted wires screen. These technologies allowed fast production of the antenna without requiring photolithographic masks, as it is widely used in the electronics industry. Four prototypes were produced and measurements were taken to verify the feasibility of using RFID tags printed with conductive ink regarding to its operation, reliability of the stored information and the exchange of data with the RFID reader via air interface. Practical results were compared with those obtained of the commercial tags. It was possible to verify that the antenna manufactured with conductive ink was able to capture and radiate efficiently electromagnetic waves, resulting in reliable exchange of data with the reader through the air interface