Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Visualization of Drop Formation and Droplet Velocity Measurement of a Piezoelectric-type Inkjet

피에조 구동형 잉크젯에서 액적 형성의 가시화 및 토출속도 측정

  • 권대희 (포항공과대학교 기계공학과) ;
  • 최용석 (포항공과대학교 기계공학과) ;
  • 이상준 (포항공과대학교 기계공학과)
  • Published : 2008.12.31
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Abstract

The reproducibility of water droplet formation which is indispensible in the investigation of a drop-on-demand piezoelectrically driven inkjet was verified by checking the size of droplet and distance from the nozzle tip of inkjet head to droplet. Based on the reproducibility of droplet formation, we visualized the formation of micro-scale droplets by acquiring consecutive images at the jetting frequency of 500 Hz for which air bubbles were not generated. Two different electric waveforms were used to drive the piezoelectric actuator. The visualization system consists of a high-speed camera that can capture images up to 250,000fps, a long-distance microscope and a halogen lamp as a light source.

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References

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