M-shaped 파형을 이용한 작은 액적의 잉크젯 프린팅

Inkjet Printing of Small Droplets Using M-shaped Waveforms

  • 홍송은 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 최지호 (한국기술교육대학교 전기.전자.통신공학부) ;
  • 김기은 (한국기술교육대학교 미래융합공학전공) ;
  • 박종운 (한국기술교육대학교 전기.전자.통신공학부)
  • Hong, Songeun (School of Electrical & Electronic & Communication Engineering) ;
  • Choi, Jiho (School of Electrical & Electronic & Communication Engineering) ;
  • Kim, Gieun (Future Convergence Engineering, Korea University of Technology and Education) ;
  • Park, Jongwoon (School of Electrical & Electronic & Communication Engineering)
  • 투고 : 2021.08.24
  • 심사 : 2021.09.16
  • 발행 : 2021.09.30

초록

Using an inkjet printing process, we have investigated a droplet formation of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) near the orifice of a piezoelectric inkjet head. With an attempt to form the smallest droplet without any satellites, we have applied various waveforms such as the unipolar, bipolar, and M-shaped waveforms. It is found that the droplet velocity and volume vary depending sensitively on the waveform width and voltage. Of those, the M-shaped waveform is shown to provide the smallest droplet volume, followed by the bipolar and then unipolar waveforms. The droplet printed on a PET film roll by the M-shaped waveform has the diameter as small as 46.1 ㎛. It is likely that the second short unipolar in the M-shape waveform increases the droplet velocity gradient, rendering the droplet smaller.

키워드

과제정보

이 논문은 2021년도 한국기술교육대학교 교수 교육연구진흥과제 지원에 의하여 연구되었음.

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