Liquid jet discharge device and liquid jet discharge method

A liquid jet discharge device comprising:

• a narrow tube having a tube shaped body that is open at both ends, wherein a discharge liquid is disposed within the narrow tube, and wherein the discharge liquid contacts at least at an inner face of the narrow tube at a contact angle of less than 90 degrees;
• a container, wherein a transmission medium is disposed within the container, wherein one end of the narrow tube contacts the transmission medium within the container so as to allow pressure to be transmitted from the transmission medium to the discharge liquid in the narrow tube;
• an adjustment mechanism fluidically coupled to the container or the narrow tube and configured to increase or reduce a pressure of a gas portion inside the container or the narrow tube in order to cause a liquid surface of the discharge liquid inside the narrow tube and an interface of the transmission medium outside the narrow tube and inside the container to be staggered in position along an axial direction of the narrow tube;
• and
• a generation mechanism configured to generate a pressure wave in the transmission medium in the container in order to propagate the pressure wave to the discharge liquid in the narrow tube and cause a liquid jet to be discharged from the liquid surface of the discharge liquid inside the narrow tube.