| 摘要 |
PURPOSE: To provide a liquid droplet ejection device adapted to an ink jet printing head capable of being produced without requiring high production accuracy and capable of developing high capacity by an optimum planning structure not affected by liquid viscosity. CONSTITUTION: In a device for ejecting a liquid in a droplet form from a cavity 18 through a nozzle by driving a transducer 14, the cavity 18 is constituted so that at least a part thereof is prescribed by the porous material 20 communicating with a liquid supply source through a small aperture group. |
