Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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On the Characteristics of the Droplet Formation from an Inkjet Nozzle Driven by a Piezoelectric Actuator

피에조 구동형 잉크젯 노즐에서의 미세 액적 형성 특성

  • 신평호 (서울산업대학교 NID융합기술대학원) ;
  • 성재용 (서울산업대학교 기계공학과) ;
  • 이석종 (서울산업대학교 에너지환경대학원)
  • Published : 2008.06.30
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Abstract

The present study has focused on the characteristics of droplet formation from an inkjet nozzle driven by a piezoelectric actuator. As an operating fluid, ethylene glycol was used and the physical properties of it such as viscosity, surface tension, contact angle and shear stress were measured. During the experiments, various temperatures and driving voltages are imposed on a capillary tube. These conditions result in a proper drive condition or an overdrive condition. In case of the proper drive condition, an image processing technique is applied to measure the diameter of a single free drop. As a result, the size of droplet is increased when the driving voltage is increased from 160 V to 190 V at 25$^{\circ}C$ In the overdrive condition where temperature or driving voltage becomes higher than the proper drive condition, satellites and the misdirected jets happen.

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References

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Cited by

  1. Visualization of Drop Formation and Droplet Velocity Measurement of a Piezoelectric-type Inkjet vol.6, pp.2, 2008, https://doi.org/10.5407/JKSV.2008.6.2.009
  2. Droplet Formation of a Piezoelectric Inkjet Nozzle According to the Variation of Pulse Widths in Bipolar Waveform vol.10, pp.1, 2012, https://doi.org/10.5407/JKSV.2011.10.1.009