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AssigneeNGK Insulators, Ltd.
InventorsTakao Ohnishi, Toshikazu Hirota, Yukihisa Takeuchi
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A liquid-drop discharge device includes an array of liquid-drop discharge units for discharging liquid from a float cell in communication with a liquid storage tank. A reaction cell, into which fluid is discharged, is provided in communication with the float cell. A differential adjusting tube is provided between the float cell and the reaction cell and includes a release valve for maintaining a specified pressure relationship between an internal pressure P2 of the float cell and an internal pressure P3 of the reaction cell. A driving circuit is provided to drive a pressurizing source of the liquid-drop discharge device and is connected to a control unit. The control unit is connected to a pressure sensor, which detects the internal pressure of the reaction cell and the release valve. The internal pressure P1 of the liquid storage tank is controlled to be larger than the internal pressure P3 of the reaction cell.
A liquid-drop discharge device comprising a liquid storage tank and a liquid reservoir of a specified capacity connected by means of a check valve, liquid discharge means for discharging liquid from the liquid reservoir, and a reaction cell having a space into which liquid is discharged from the liquid discharge means, the liquid discharge means comprising a plurality of adjoining liquid-drop discharge units respectively connected to a liquid supply path communicating with the liquid reservoir, and each liquid-drop discharge unit comprising a liquid discharge nozzle opening into the reaction cell, a pressurizing chamber for pressurizing liquid to be discharged through the nozzle, an introducing hole for supplying liquid from the liquid supply path to the pressurizing chamber, and a piezoelectric/electrostrictive element for pressurizing operations,
Dependencies are inferred from the claim text.