Ink jet printing apparatus

Details Ink jet printing apparatus Ink jet printing apparatus

1978-12-18

1980-10-14

Hartary, Joseph W.

Recorders

Record receiver deforming

310317, G01D 1518

Patent

active

042284406

ABSTRACT:
Ink is fed to an ink jet printing head (12) from which it is ejected into a sheet of printing paper (19). A plurality of capacitive ultrasonic vibrators (29), (31) are provided inside the printing head (12) to atomize ink therein prior to ejection. The ultrasonic vibrators (29), (31) are connected in parallel with each other and also to an inductor (48) to constitute a resonant circuit. An electrical drive signal is applied to the resonant circuit, the frequency of the drive signal being equal to the resonant frequency of the resonant circuit.

REFERENCES:
patent: 2676868 (1954-04-01), Jacob
patent: 3363117 (1968-01-01), Mondot
patent: 3839698 (1974-10-01), Ehrlich
patent: 3943847 (1976-03-01), Watanabe
patent: 4005435 (1977-01-01), Lundquist
patent: 4019188 (1977-04-01), Hochberg

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