Ink jet printing apparatus

Details Ink jet printing apparatus Ink jet printing apparatus

1982-09-14

1984-12-18

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1800

Patent

active

044893353

ABSTRACT:
An ink jet printing apparatus of the impulse type which has an ejection failure detector. The detector has electrode means for charging ejected droplets, a reception electrode for receiving the charged droplets, and a circuit for detecting the approach and arrival of the charged droplets at the reception electrode. An ejection failure detection causes a nozzle purging operation.

REFERENCES:
patent: 4050078 (1977-09-01), Isayama
patent: 4123761 (1978-10-01), Kimura
patent: 4176363 (1979-11-01), Kasahara
patent: 4323905 (1982-04-01), Reitberger
patent: 4323908 (1982-04-01), Lee et al.

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