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Ejection Feasibility of High Viscosity Fluid with Magnetostrictive Inkjet Printhead

机译:磁致伸缩喷墨打印头高粘度流体的喷射可行性

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This paper presents ejection feasibility of high viscosity fluids with the magnetostrictive inkjet printhead (MagJet), which uses a Terfenol-D rod as an actuation mechanism. It has been known that high viscosity is often an obstacle in ejecting sound droplets. Ejection feasibility is estimated mathematically first, and then evaluated experimentally Also wetting characteristics is evaluated experimentally The generated force is estimated to be enough to eject a droplet, but the Z number is estimated to be too low to eject it. Two silicon fluids are used: one has 100 cP and the other 350cP. It is observed that silicon fluid achieves complete wetting with the outer surface of the nozzle, and that moves up along the outer surface of the nozzle. Meniscus control makes it possible for the MagJet to control the movement of the meniscus. Applied current to the MagJet is from -1.2 to 3 A for 100 cP and from -1.8 to 3.5 A for 350 cP, respectively The ejection of high viscosity fluids is successful. The ejected volume is estimated to be between 57 pL and 61 nL. It can be concluded that the MagJet has big potential to eject high viscosity fluid.
机译:本文介绍了使用磁致伸缩喷墨打印头(MagJet)喷射高粘度流体的可行性,该磁头使用Terfenol-D杆作为驱动机构。已知高粘度通常是喷射声滴的障碍。首先以数学方式评估喷射可行性,然后通过实验进行评估。此外,还通过实验评估润湿特性。估计产生的力足以喷射液滴,但Z值估计太低而无法喷射液滴。使用两种硅油:一种硅油为100 cP,另一种为350cP。观察到硅流体与喷嘴的外表面完全润湿,并且沿着喷嘴的外表面向上移动。弯液面控制使MagJet可以控制弯液面的运动。对MagJet施加的电流在100 cP时为-1.2至3 A,在350 cP时为-1.8至3.5A。高粘度流体的喷射成功。排出的体积估计在57 pL和61 nL之间。可以得出结论,MagJet具有喷射高粘度流体的巨大潜力。

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