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Open AccessFeature PaperArticle

A Vector Printing Method for High-Speed Electrohydrodynamic (EHD) Jet Printing Based on Encoder Position Sensors

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Department of Electronics Material and Devices Engineering, Soonchunhyang University, 22, Soonchunhyang-Ro, Shinchang, Asan, Chungnam 336-745, Korea
2
Department of Mechanical Engineering, Soonchunhyang University, 22, Soonchunhyang-Ro, Shinchang, Asan, Chungnam 336-745, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(3), 351; https://doi.org/10.3390/app8030351
Received: 11 February 2018 / Revised: 26 February 2018 / Accepted: 26 February 2018 / Published: 28 February 2018
(This article belongs to the Special Issue Printed Electronics 2017)
Electrohyrodynamic (EHD) jet printing has been widely used in the field of direct micro-nano patterning applications, due to its high resolution printing capability. So far, vector line printing using a single nozzle has been widely used for most EHD printing applications. However, the application has been limited to low-speed printing, to avoid non-uniform line width near the end points where line printing starts and ends. At end points of line vector printing, the deposited drop amount is likely to be significantly large compared to the rest of the printed lines, due to unavoidable acceleration and deceleration. In this study, we proposed a method to solve the printing quality problems by producing droplets at an equally spaced distance, irrespective of the printing speed. For this purpose, an encoder processing unit (EPU) was developed, so that the jetting trigger could be generated according to user-defined spacing by using encoder position signals, which are used for the positioning control of the two linear stages. View Full-Text
Keywords: electrohydrodynamic jet; drop-on-demand; high-speed printing; vector printing; frequency; encoder trigger; uniform printing electrohydrodynamic jet; drop-on-demand; high-speed printing; vector printing; frequency; encoder trigger; uniform printing
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Phung, T.H.; Nguyen, L.N.; Kwon, K.-S. A Vector Printing Method for High-Speed Electrohydrodynamic (EHD) Jet Printing Based on Encoder Position Sensors. Appl. Sci. 2018, 8, 351.

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