한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제21권1호
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  • Pages.26-30
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  • 2023
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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잉크젯 프린팅에서 발생하는 연속 미소 액적의 바운싱 현상

Bouncing Phenomena of Micro-droplet Train in Inkjet Printing

  • 투고 : 2022.10.28
  • 심사 : 2023.01.14
  • 발행 : 2023.03.31
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초록

Interaction of a droplet and substrate is important to determine the coating and final deposition pattern in inkjet printing system. In particular, an accurate deposition of the droplet should be guaranteed for high-resolution patterning. In this study, we performed high-speed shadowgraph experiments on droplet train impact in inkjet system. From the high-speed images, we observed an unexpected bouncing phenomenon. We have found two factors affecting bouncing regime; the Weber number and the curvature of deposited droplet. Experimental results indicate that there is a critical curvature diameter of deposited droplet, which splits into bouncing and merging regime. From this result, we obtained a power-law behavior between the Weber number and the curvature. The understanding of bouncing phenomena helps to improve the accuracy and productivity of inkjet printing.

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참고문헌

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