高粘度液体非接触塗布装置に関する研究

抄録

A technology for ejecting liquids is commonly used in an inkjet printing. However, previous method can eject only lowly-viscous liquid up to 20 mm²/s. Recently, we have proposed a new system for generating highly-viscous liquid up to 1,000 mm²/s. In our system, a wettable thin tube is inserted into a liquid-filled container and the liquid level inside the tube is kept deeper than that outside the tube. An impulsive force is applied at the bottom of the container followed by the application of highly-viscous liquid. In this study, we investigate its mechanism by using numerical method. We simulate the pressure-impulse field just after the impact and find that the difference of the pressureimpulse at the inner edge of the thin-tube decreases the liquid velocity inside the tube.