Jet Velocity Control Method Using PVA Gel for a New Ink-jet Generator

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  • MAESHIMA Mao
    Dep. Ind. Tech. Innov., Tokyo University of Agriculture and Technology
  • KUDO Honoka
    Dep. Mech. Syst. Eng., Tokyo University of Agriculture and Technology
  • ONUKI Hajime
    Dep. Mech. Syst. Eng., Tokyo University of Agriculture and Technology
  • KURIHARA Chihiro
    Dep. Mech. Syst. Eng., Tokyo University of Agriculture and Technology
  • KIYAMA Akihito
    Dep. Mech. Syst. Eng., Tokyo University of Agriculture and Technology
  • TAGAWA Yoshiyuki
    Inst. Eng., Div. Adv. Mech. Syst. Eng., Tokyo University of Agriculture and Technology

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Other Title
  • PVAゲルを用いた新規インクジェット射出速度の制御手法
  • PVA ゲル オ モチイタ シンキ インクジェット シャシュツ ソクド ノ セイギョ シュホウ

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Abstract

<p>This paper proposes a novel method for controlling the jet velocity using a PVA gel for a new inkjet generator. Recently, we suggested the new inkjet generator using an impulsive force. The generator can eject highly-viscous jets (10,000mm2/s). However, cavitation bubbles occur in the liquid when a strong impulsive force is imposed. It is difficult to control the bubble volume which varies the jet velocity. To control the jet velocity, controlling of the bubble volume is required. In this study, we propose the control method using the PVA gel, which initially contains the bubbles. We conducted experiments with the various volume of PVA gel. We successfully control the bubble-assisted increment of the jet velocity. Furthermore, we discussed the mechanism of the jet acceleration by considering the propagation of the pressure wave in the liquid/gel.</p>

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