Ink droplet formation control in an ink jet system printer

Details Ink droplet formation control in an ink jet system printer Ink droplet formation control in an ink jet system printer

1980-10-10

1983-01-11

Pellinen, A. D.

Recorders

Record receiver deforming

G01D 1518

Patent

active

043684742

ABSTRACT:
An ink jet system printer includes a nozzle for emitting an ink liquid under a predetermined pressure, an electro-mechanical transducer secured to the nozzle for vibrating the nozzle in accordance with an excitation signal of a given frequency, thereby forming ink droplets at the given frequency, and a charging tunnel for charging the ink droplets in accordance with print information. A charge condition detection unit is provided for monitoring the charge condition of the ink droplets, the output signal of the charge condition detection unit being indicative of a droplet formation condition. When the output signal of the charge condition detection unit indicates the occurrence of satellite ink droplets in addition to the normal ink droplets, the voltage level of the excitation signal, which is applied to the electrode-mechanical transducer, is varied to eliminate the occurrence of the satellite ink droplets.

REFERENCES:
patent: 3683396 (1972-08-01), Keur et al.
patent: 3868698 (1975-02-01), Dressler
patent: 3928855 (1975-12-01), Helinski et al.
patent: 4018383 (1977-04-01), Paton et al.

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