• 제목/요약/키워드: 액적 바운싱

검색결과 1건 처리시간 0.015초

잉크젯 프린팅에서 발생하는 연속 미소 액적의 바운싱 현상 (Bouncing Phenomena of Micro-droplet Train in Inkjet Printing)

  • 조아라;김형수
    • 한국가시화정보학회지
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    • 제21권1호
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    • pp.26-30
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    • 2023
  • 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.