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US 5,063,396 AGranted
Droplets jetting device
AssigneeSeiko Epson Corporation
InventorsShoko Shiokawa, Yoshikazu Matsui, Toshihiko Ueda
Life of this patent
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Abstract
A device for splashing liquid in the form of droplets from a piezo electric material with cuts on the surface thereof. Electrodes are formed on the surface to apply an AC voltage thereto. The voltage input is pulsed. The pulsed voltage causes a Rayleigh mode wave to propagate along the surface. Liquid also propagates along the surface, and the wave causes some of the liquid to splash off the surface as droplets.
Claims6
A droplets jetting device, comprising:
- a substrate having a piezo-electric material for generating a Rayleigh mode elastic surface wave in response to an AC voltage applied thereon, said substrate including a surface for propagation of said wave thereupon;
- a pair of input electrodes formed on the surface of said substrate, for applying an AC voltage to said substrate;
- AC voltage generator means for generating an AC voltage and applying said AC voltage to said input electrodes;
- pulse signal generator means for causing said AC voltage to occur intermittently;
- means for placing liquid droplets on the surface of said substrate, said droplets being placed downstream of and propagating in the same direction as the Rayleigh surface wave.
2 more elements
Dependencies are inferred from the claim text.