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US 6,598,958 B2Granted
Liquid ejector
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsJyunichi Aizawa, Hiroshi Fukumoto, Munehisa Takeda
Life of this patent
Estimating the term…
Abstract
A liquid ejector including at least one acoustic conductor for propagating acoustic wave, the at least one acoustic conductor including a first surface which is provided with the acoustic wave from the outside and an outer surface configured to focus the acoustic wave at a focal point, and a supplying path for supplying liquid to be ejected from the outside of the acoustic conductor to the focal point.
Claims19
A liquid ejector comprising:
- at least one acoustic conductor including a solid material for propagating acoustic wave, said at least one acoustic conductor including a first surface which is provided with said acoustic wave from the outside and an outer surface configured to focus said acoustic wave at a focal point;
- and
- a supplying passage for supplying liquid to be ejected from the outside of said acoustic conductor to said focal point.
A liquid ejector comprising:
- at least one acoustic conductor for propagating acoustic wave, said at least one acoustic conductor including a first surface which is provided with said acoustic wave from the outside and an outer surface configured to focus said acoustic wave at a focal point;
- a supplying passage for supplying liquid to be ejected from the outside of said acoustic conductor to said focal point;
- and
- a protecting member being in contact with said outer surface of said at least one acoustic conductor and having an acoustic impedance larger than that of said at least one acoustic conductor,
- wherein said protecting member is thicker than the wavelength of said acoustic wave in said at least one acoustic conductor.
2 more elements
A liquid ejector comprising:
- at least one acoustic conductor for propagating acoustic wave, said at least one acoustic conductor including a first surface which is provided with said acoustic wave from the outside and an outer surface configured to focus said acoustic wave at a focal point;
- and
- a supplying passage for supplying liquid to be ejected from the outside of said acoustic conductor to said focal point,
- wherein:
- said at least one acoustic conductor further comprises an inner surface separated from said outer surface;
- and
- said supplying passage is formed by said inner surface.
4 more elements
Dependencies are inferred from the claim text.