Ink jet contamination detecting system

Details Ink jet contamination detecting system Ink jet contamination detecting system

1978-02-28

1979-10-16

Hartary, Joseph W.

Recorders

Record receiver deforming

G01D 1800

Patent

active

041715276

ABSTRACT:
Fouling of an electrostatic ink jet head is sensed and causes shutoff of the head and of the associated electronics. The fouling is sensed by detecting contamination of the charge electrodes or of the deflection plates by conductive ink, the detection being by sensitive circuitry employing diodes.

REFERENCES:
patent: 3465351 (1969-09-01), Keur
patent: 3852768 (1974-12-01), Carmichael
patent: 3898673 (1975-08-01), Haskell
patent: 3911445 (1975-10-01), Foster
patent: 4063253 (1977-12-01), Ito
Burns, H. R.; "Automatic Ink jet Deflection Plate Cleaner;" IBM Tech. Disc. Bulletin; vol. 16, No. 9, Feb. 1974, pp. 3035-3036.

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