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Dissertations / Theses on the topic 'Printhead'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Acosta, Everardo. "Laser Printhead Concept Design for a 3D Moving Platform." Thesis, California State University, Long Beach, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10638564.

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<p>Companies all over the world are always looking for new technologies to efficiently produce quick prototypes during the research stage of their projects. The Computer Numerically Controlled (CNC) machines, laser cutting machines, and drilling machines are among the most common machinery used to produce quick prototyping. Additionally, in the last couple of years, many companies have also adopted 3D printers in an attempt to produce quick and cost effective prototypes. In short, all these machines are high precision tools used to produce prototypes and mass production products. It is obvious

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2

Gaskill, Dave. "Third-generation Advances in Thermal Printhead-based Chart Recorders." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614662.

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International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California<br>A brief recap of the effect thermal printhead technology has had on the common 8-channel strip chart recorder, followed by a summary of second and third generation products and their envolving capabilities. How these new instruments are being accepted and used by telemetrists and ground station managers who are faced with bigger tasks and shrinking budgets. A study of how today's telemetry professionals are shaping the 8-channel recorders of tomo

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3

Gleason, Blake Wilbur. "Positive pressure drop-on-demand printhead for Three-Dimensional Printing." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/32318.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.<br>Includes bibliographical references (leaf 87).<br>In drop-on-demand printing, wetting out of the binder fluid onto the orifice face typically has been prevented by some combination of the following: coatings on the orifice face, high surface energy fluids, and negative pressure. This non-wetting approach is not practical for low surface energy fluids. A new positive pressure method of drop-on-demand printing has been developed which eliminates the requirement for a non-wetting system; modifications

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4

Shutts, Christopher James. "Development of a reliable electrostatic multijet printhead for three dimensional printing." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11155.

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5

Brancazio, David. "Development of a robust electrostatically deflecting printhead for three dimensional printing." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/12837.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.<br>Title as it appears in the June, 1991 MIT Graduate List: Design of a robust continuous-jet printhead for three-dimensional printing.<br>Includes bibliographical references (leaves 51-52).<br>by David Brancazio.<br>M.S.

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6

Lass, Nils [Verfasser], and Roland [Akademischer Betreuer] Zengerle. "Pneumatically actuated high temperature resistant printhead for molten metals based on the StarJet principle." Freiburg : Universität, 2016. http://d-nb.info/1122831838/34.

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7

Wijshoff, Herman. "Structure- and fluid-dynamics in piezo inkjet printheads." Enschede : University of Twente [Host], 2008. http://doc.utwente.nl/58366.

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8

Leblanc, Valérie Ph D. Massachusetts Institute of Technology. "Micromachined printheads for the direct evaporative patterning of organic materials." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39481.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2007.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references.<br>Organic optoelectronic devices are appealing for low-performance applications on very low cost and flexible substrates, due to their low-temperature processing. However, it still remains a challenge to develop suitable fabrication techniques to pattern organic thin films on low-cost, large-area subst

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9

Erikson, Pernilla. "Variabeltryck med inkjet i dagspress : Möjligheten att införa anpassade upplagor." Thesis, Högskolan Dalarna, Grafisk teknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:du-11153.

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På uppdrag av Tidningsutgivarna har en studie utförts angående olika möjligheter att införa tryck av variabeldata med tryckmetoden inkjet i svensk dagspress. Målet var att undersöka tekniska möjligheter och begränsningar samt att utreda om det fanns något intresse på marknaden som skulle kunna ge någon avkastning. Studien utfördes med hjälp av noggranna källstudier och ett fortlöpande samarbete med olika företag med intresse för dagspress. Rapporten beskriver också företag som arbetar med den här typen av innovationer idag och diverse tidigare projekt med variabeltryckta tidningar. Nya teknolo

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10

Gerdes, Björn [Verfasser], and Roland [Akademischer Betreuer] Zengerle. "StarJet printheads for printing molten solder jets at 320 °C and molten aluminum alloy droplets at 950 °C." Freiburg : Universität, 2019. http://d-nb.info/1192660889/34.

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11

Kalkandjiev, Kiril [Verfasser], and Roland [Akademischer Betreuer] Zengerle. "Microfluidics based on silicon, polymer and all-polymer technologies as an alternative to silicon, glass: a case study for TopSpot printheads." Freiburg : Universität, 2015. http://d-nb.info/1119805597/34.

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12

Fenollosa, Artés Felip. "Contribució a l'estudi de la impressió 3D per a la fabricació de models per facilitar l'assaig d'operacions quirúrgiques de tumors." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/667421.

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La present tesi doctoral s’ha centrat en el repte d’aconseguir, mitjançant Fabricació Additiva (FA), models per a assaig quirúrgic, sota la premissa que els equips per fer-los haurien de ser accessibles a l’àmbit hospitalari. L’objectiu és facilitar l’extensió de l’ús dels prototips com a eina de preparació d’operacions quirúrgiques, transformant la pràctica mèdica actual de la mateixa manera que en el seu moment ho van fer tecnologies com les que van facilitar l’ús de radiografies. El motiu d’utilitzar FA, en lloc de tecnologies més tradicionals, és la seva capacitat de materialitzar de forma

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13

chia-chi, Chan, and 詹佳期. "The Inveatigations of Thermal Ink-Jet Printhead." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/96484931987056134839.

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碩士<br>大葉大學<br>電機工程研究所<br>86<br>Tantalum-Ruthenium thin film were fabricated by magnetron co-sputtering. The Ta-Ru alloy thin films are used in thermal ink-jet printhead. For thermalink-jet printer heads, thin films of Ta-Ru alloys play critical roles as the heater material. In the experiment, the Ta-Ru

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14

Wu, Yeong-Jen, and 吳勇箴. "Studies on Shear Mode Piezoelectric Printhead Design." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/68633310704183431831.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>95<br>Abstract In recent years, the ink-jet technologies are used on some industrial manufacture like circuit board, resister, electric capacity, RFID and rapid prototyping technologies. For cost down and manufacture time saving, the piezoelectric printing technology is applied very popularly. The purpose of this thesis is to study a kind of new manufacturing process of piezoelectric printhead which is different from traditional yellow light process. It can reduce manufacture cost and time substantially by using wafer-cutting technology to form the channels and

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15

Hong, Ming-Ching, and 洪銘青. "Ink Ejection Performance Analysis for a Picojet Printhead." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/21150476749550916936.

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碩士<br>大葉大學<br>機械工程研究所碩士班<br>93<br>A transient three-dimensional conservation equations of mass and momentum was developed to simulate the droplet ejection behavior for a commercially avialable Picojet printhead. The interfacial flow characteristics including the ink infusion, ejection, and droplet formation are discussed in detail. In the analysis, the VOF method in conjunction with the PLIC Calculation procedure is adopted to determine the evolution of the ink surface movements. To verify the present formulation, the predictions of droplet ejection development are found to be in good agreemen

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16

Huang, Shih-Wun, and 黃士文. "Studies on Shear Mode Piezoelectric Ceramic Printhead Array Design." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/52739039498830918352.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>93<br>With the progress of the ink-jet technologies, the ink-jet technologies have not just application to traditional printing market. In recent years, the development of the flat-display technologies are rising and flourishing and the requirement of displayers is increasing largely. For coat down and manufacture time saving, the yellow light process is not satisfied by industry. Therefore, the industry starts to find new process and among these processes, the piezoelectric printing technology is applied most popularly. 　This paper’s purpose is to study one ki

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17

Liu, Hsin-Yi, and 劉欣怡. "Investigation on the Droplet Ejection of a Piezo-Printhead." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/43154963775372086250.

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碩士<br>國立臺灣大學<br>機械工程學系<br>85<br>The present study aims to investigate the pressure rise in the ink flow channel and the ink droplet formation process of a piezoelectric printhead after an electrical pulse is applied to the printhead. The ink flow channel is simplified as a straight circular pipe followed by a convergent nozzle. Both numerical analysis and experimental observations are performed in this study. In the numerical analysis, a characteristic method is used to solve the one-dimens

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18

Kuo, Nai-Hao, and 郭乃豪. "Design and Characterization of a Monolithic Integrated Thermal Inkjet Printhead." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/96904084776919829407.

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碩士<br>大葉大學<br>電機工程研究所<br>88<br>In this paper, the fabrication of silicon microfluidic channels for monolithic inkjet printing devices is described. Two planarization processes for silicon microchannel have been developed. One is through-hole etching via SiC films and then planarizes it by plasma-enhanced chemical vapor deposition (CVD). The other is to fill the microfluidic channels with silicon oxide by low-pressure CVD and subsequent by chemical-mechanical polishing. The process technology (six masks) was demonstrated by the fabrication of a monolithic silicon microchannel structure with ink

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19

林見聰. "Characterization of droplet ejection process for a piezoelectric inkjet printhead." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/48239746843500420036.

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碩士<br>大葉大學<br>機械工程研究所碩士班<br>92<br>The present study aims to explore the fluid physics of the micro-ejecting process for a full-size piezoelectric inkjet printhead by numerical simulations. In the analysis, the theoretical formulation includes a set of three-dimensional transient conservation equations of mass and momentum, with the incorporation of continuous surface force model for treating the interfacial surface tension effect. The resultant governing equations are solved using an iterative SIMPLEC (Semi-Implicit Method for Pressure-Linked Equations Consistent) algorithm for determining the

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20

Ching, Lian Wen, and 廖文慶. "Preliminary Study of Using ER Fluids in Ink-jet Printhead." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/71913775944846880498.

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碩士<br>大葉大學<br>機械工程研究所<br>87<br>The demand for non-impact printers has grown considerably with the advent of the personal computer. At the low end, two drop-on-demand techniques predominate the market — piezoelectric impulse and thermal-bubble types. However, the high cost of piezoelectric printhead and the thermal problems encountered by thermal-bubble jet printhead restrain the use of these techniques in array-type printhead. In this study, we propose a new design of printhead with ER fluid acting as a working medium. The ink drop is controlled by the ER fluid valve. This innovative design

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21

Chih-MingCheng and 鄭智銘. "Research on Piezoelectric Printhead Printer Module for Three-dimensional Printing." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/n4e387.

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22

Lin, Tsong-Yi, and 林聰鎰. "Numerical Studies of Flow Dynamics in a Piezoelectric Inkjet Printhead." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/20347074451338643917.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>95<br>Micro-droplet injection technology, originated from inkjet printing technology have been applied to many appilications such as IC package, LCD color filters, micro fuel pump, 3D rapid prototyping technology, and bio-medical devices. Accompanying with progress of Micro Electro-Mechanical Systems (MEMS), piezoelectric inkjet printhead, one of the major technology of Drop-on-Demand (DOD) inkjet printheads, has raised a lot of attention because of its great ability to wide applications. This thesis studies the squeeze mode piezoelectric inkjet printhead by

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23

Tseng, Chao-Yuan, and 曾昭元. "Study on Droplet Ejection of An ER-Fluid-Controlled Inkjet Printhead." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/18250486874473573994.

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碩士<br>大葉大學<br>機械工程研究所<br>89<br>The demand for non-impact printers has grown considerably with the advent of the personal computer. At the low end, two drop-on-demand techniques predominate the market – piezoelectric impulse and thermal-bubble types. However, the high cost of piezoelectric printhead and the thermal problems encountered by thermal-bubble jet printhead restrain the use of these techniques in array-type printhead. In a new design of printhead with ER fluid acting as a working medium, the actuating element and the ER fluid valve control the ink ejection. In this thesis, the tran

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24

Kai-ChengChang and 張凱程. "Data Transformation on the Integrated Printing of Toshiba CA4 Piezoelectric Printhead." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/7r826b.

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25

Kuo, Yung-Chi, and 郭永吉. "Simulation of the Droplet Ejection Process of a Piezoelectric Inkjet Printhead." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/89316528368677262376.

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碩士<br>國立東華大學<br>材料科學與工程學系<br>91<br>A computer-aided analysis system has been developed in this study to simulate the formation, ejection, and impact of liquid droplet in a piezoelectric inkjet printing device. The effects of voltage pulse of the piezoelectric actuator and surface tension of the liquid on the droplet ejection phenomena are evaluated by the simulation system. The droplet ejection is a fluid flow phenomenon, which involves two phases (liquid and gas) and free surface evolution of the liquid. The computer simulation system is based on a SOLA (Solution Algorithm) scheme coupled wit

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26

朱凱隆. "Experimental Study of Inside and Outside Flow Fields in PZT PrintHead." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/75cdau.

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Tsai, Wei-Ming, and 蔡煒銘. "Numerical Study of Droplet Ejection Behavior for a Squeeze Type Piezoelectric Printhead." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/80080739454021202292.

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碩士<br>大葉大學<br>機械工程研究所碩士班<br>93<br>Ink-jet are restriction the limited to the size of one micron of geometry，It is not easier to examine the flow field via the experiment amount，And set up a printhead equipment have need to consume a lot of time and repeated test experiment blackly，By imitate technology can is it gush out a printhead equipment with set up relevant to make purpose of technology set up with higher speed to achieve。Develop a can imitate the piezoelectic three-dimensional simulation system of computer of the ink-jet system drop producing , flight course in the course of printing in

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28

Chang, Chia-Ming, and 張家銘. "The Application of Micro Heater with Artificial Nucleation Sites in Inkjet Printhead." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/87674011984941089956.

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29

M, L. Chiu, and 邱明立. "Experimental Observation and Numerical Simulation for Injection Characteristics of Piezoelectric Inkjet Printhead." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/52455737871793543257.

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碩士<br>國立臺北科技大學<br>冷凍與低溫科技研究所<br>92<br>In the research study, the commonly used analytical software in computational fluid dynamics, CFD-RC, for statistical analysis on the droplet injection by piezoelectric inkjet printhead, and accompanied with experimental observation to analyze the injection of droplets. This study defined liquid form and external gas form f piezoelectric inkjet as incompressible fliuid, governing equation as the conservation of mass and momentum, and used Volume-Of-Fluid (VOF) to describe the size and motion path of the droplets. Finite Volume method was used to disperse t

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30

Jian, Ching-Sung, and 簡青松. "An Analysis of Thermal Stress in a Thermal Bubble Ink Jet Printhead." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/13216169300067622367.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>84<br>In chapter 2, the stability problem of SHA is analyzed and an equation that demonstrates how some of the important specifications of amplifiers may affect the stability of closed-loop SHA is derived. In chapter 3, based on the fully differential "gain-enhanced unity-gain amplifier", a 8-bit, lOOMSamples/sec, fully differential CMOS SHA is designed and implemented by using an 0.8um, N-well, DPDM CMOS process. In chapter 4, a novel macromodel for SHA which includes its important characteristics is proposed.

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31

Lai, Kuen-Bin, and 賴昆彬. "The Design and Implementation of an Inkjet Printhead Fuzzy PI Controller on CPLD." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/77889997099888524556.

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32

Chang, Cheng-Ming, and 張正明. "Visualization and Measurement of Droplet Ejection from High-Resolution Thermal-Bubble Inkjet Printhead." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/hvs2b4.

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碩士<br>國立中央大學<br>機械工程研究所碩士在職專班<br>96<br>This study visualizes and measures the droplet ejection process of a high-resolution thermal-bubble inkjet printhead. A simple system utilizes the synchronization of the stroboscope, which consist of a set of optical lens, a function generator, and an image grabber, to record the droplets image at different delay time and analyze the length, flying speed and size of droplets. Also, the influences of voltage, pulse width, frequency, and the different viscosity of ink on droplet ejection process are discussed in order to know the relation between the inkjet

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33

Hsin-JungLI and 李欣融. "Study of the Time Sequence Control in a Piezoelectric Inkjet Printhead for Additive Manufacturing." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/b5s8mx.

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碩士<br>國立成功大學<br>航空太空工程學系<br>104<br>The technology of the binder jetting belongs to one of the additive manufacturing technique. In the present market and academic research, most of the primary module usually ejects material by thermal bubble type printhead, because of this technology is limited to printing not only water-soluble material but also low viscosity. Therefore, the piezoelectric inkjet printhead is studied, which is considered more stable than thermal bubble jet, and can accept material widely and have the longer life. In this study, A Toshiba piezoelectric printhead is chosen first

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Che-WeiKuo and 郭哲瑋. "Studies of the Design and Droplet Ejection in a Squeeze Mode Piezoelectric Inkjet Printhead." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/61860435459480907142.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>98<br>This study intended to understand the characteristics and designing issues of squeeze mode piezoelectric inkjet printhead. Squeeze mode piezoelectric inkjet printheads have been fabricated by using the piezoelectric PZT tube and glass capillary with contraction nozzle at one end. To study the inkjet printhead performance, a stroboscopic imaging systems was developed to image the droplet ejection process under various driving signals. Microscopic Laser Doppler Vibrometer (MLDV) measurement was used to measure the amplitude of piezoelectric inkjet printhea

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Riza, Mehdi. "Mechanical Design and Analysis: High-Precision Microcontact Printhead for Roll-to-Roll Printing of Flexible Electronics." 2021. https://scholarworks.umass.edu/masters_theses_2/1022.

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Flexible electronics have demonstrated potential in a wide range of applications including wearable sensors, photovoltaics, medical devices and more, due to their properties of extreme adaptability while also being lightweight and highly robust. The main challenge standing in the way of progress in this field is the difficulty of large-scale manufacturing of these flexible electronics compared to their rigid counterparts. Microcontact printing is a form of soft lithography in which an elastomeric stamp is used to transfer sub-micron scale surface patterns onto a flexible substrate via ink mono

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HUANG, YEN-TI, and 黃彥迪. "Research and development of high-speed sintering 3D printing machine with page-wide piezoelectric printhead module." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/gy7g27.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>107<br>This study is the early research on the development of page-wide piezoelectric printhead module high-speed sintering 3D printing machine. At first, the design and development of the heating process was carried out with a modified single thermal bubble printhead powder bed sintering 3D printing machine. At the same time, the material selection and the properties of the material were analyzed to establish the reaction mechanism and print the finished product. Organize a better printing strategy and apply this experience to machine process development. In additio

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Jwo, Kuo Lung, and 卓國隆. "A Study on the Dynamic Characteristics of An ER Fluid Controlled Inkjet Printhead with Two Output Units." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/13779024409619058912.

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碩士<br>大葉大學<br>機械工程研究所<br>89<br>ABSTRACT The demand for fast printing, high quality and low cost printer has increased steadily since the use of personal computers became a necessity of the daily life. In this thesis, a novel array-type inkjet printhead utilizing the tunable viscoelastic property of the electro rheology fluid as a control value mechanism is studied. The static characteristics of this ER value is modelled theoretically and its major design parameters are identified thereafter. In addition, by applying electric field upon the concentric electrodes of the ER val

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Lai, Jr-Ming, and 賴志銘. "Investigation of the effect of a transducer pulse, nozzle geometry and liquid hydrophobicity on the drop formation of an ink jet printhead." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/88102578336391511960.

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博士<br>國立交通大學<br>機械工程學系<br>98<br>Numerical calculations were performed to investigate the effect of the component of a single transducer pulse on the ejection of a drop for a drop-on- demand ink-jet printhead with a piezoelectric actuator. The flow field is governed by continuity and Navier-Stokes equations. A volume-of-fluid method with a piecewise-linear interface construction is used to track the complicated topological variation of the liquid-gas interface. The computer code was validated with experimental results present in the literature. The volume of the primary drop is closely related

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Yang, Shang-Yi, and 楊上逸. "The Development of Multi-Material 3D Bioprinter via Changeable Printheads." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3nhk62.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>106<br>3D Bioprinting Technique has been widely commercialized by many companies in recent years. The present 3D bioprinter is based on Extrusion-based Bioprinting Technique for most, which are mostly fixed printhead types that must be replaced and corrected before printing if needed. However, most of the bioprinters are unable to perform printing and replacement of the printheads/materials during printing, thus limiting the possibility of printing material combinations. Therefore, this study intends to develop multi-material pr inthead module with selectively and

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Chen, Xin-Yi, and 陳心怡. "The Improvement of Modules in Multi-material Changeable-printheads 3D Bioprinter." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/y5qq22.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>107<br>3D Bioprinting Technique has been widely commercialized by many companies in recent years. The present 3D bioprinters are mostly based on extrusion-based bioprinting technique, which are mostly fixed printhead types. The printhead replaceable multi-material 3D bioprinter developed in our lab in the previous study was found that some functional modules seriously affected the choice of materials after testing. Therefore, this study has improved the pneumatic-control system, the nozzle module, and the cooling module to achieve the application of more diverse biol

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