Long-reach Flying Functional Inkjet System by Employing Electrostatic Acceleration

In this paper, the authors proposed a novel idea of a long-reach flying inkjet system employing electrostatically-accelerated ink drop for the purpose of functional ink micro pattern plotting by contact-free and environment friendly. Proposed working principle was demonstrated through experiment and analysis. At the 5-mm of electrode gap and φ 120 m μ of nozzle, the applicable maximum voltage was 3.5kV realizing 67% up (1.67 times) of droplet flying velocity by one-step of accelerating. By φ 10 m μ of droplet, over 35m/s of flying velocity was promising and by 2~3 steps of accelerating further of speed increment could be expected.