| 摘要 |
The device has an electrically insulating ink container containing one electrode and a counter-electrode disposed adjacent to the jet nozzle which is laser-bored through the container cover plate. The two electrodes are excited by a voltage pulse such as to generate a spark between the ink meniscus and the counterelectrode, and to expel ink particles, rather than a single blob. The ink can be kept in circulation between the container and a reservoir by a pomp. The meniscus can be kept outside the nozzle by a second nozzle coaxial to the first, or by a suitable arrangement of the ink hydraulic circuit. In the case of magnetic ink, the meniscus is pulled back by a magnetic field. The ink can also be brought in front of the nozzle by capillarity.
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