Ultrafine fluid jet apparatus

Details Ultrafine fluid jet apparatus Ultrafine fluid jet apparatus

2003-02-20

2008-10-14

Shah, Manish S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S047000, C347S054000

Reexamination Certificate

active

07434912

ABSTRACT:
An ultrafine fluid jet apparatus including a substrate arranged near a distal end of an ultrafine-diameter nozzle to which a solution is supplied, and an optional-waveform voltage is applied to the solution in the nozzle to eject an ultrafine-diameter fluid droplet onto a surface of the substrate; wherein an electric field intensity near the distal end of the nozzle according to a diameter reduction of the nozzle is sufficiently larger than an electric field acting between the nozzle and the substrate; and wherein Maxwell stress and an electro-wetting effect being utilized, a conductance is decreased by a reduction in the nozzle diameter or the like, and controllability of an ejection rate by a voltage is improved; and wherein landing accuracy is exponentially improved by moderation of evaporation by a charged droplet and acceleration of the droplet by an electric field.

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Gazou Denshi Jyohou Gakkai, vol. 17, No. 4, 1988, pp. 185-193.

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