Continuous ink jet printer apparatus having improved short detec

Details Continuous ink jet printer apparatus having improved short detec Continuous ink jet printer apparatus having improved short detec

1989-09-18

1991-02-19

Reynolds, Bruce A.

Recorders

Record receiver deforming

G01D 1800

Patent

active

049948210

ABSTRACT:
A short detection system for a continuous ink jet printer includes an electrically conductive sensor element located along an ink egress passage of the printer's catcher; a dielectric surface formed along the drop impact region of the catcher, between the drop electrodes and the sensor element; and signal circuit responsive to a charge polarity reversal output by the sensor for signalling a charge electrode short condition.

REFERENCES:
patent: 4171527 (1979-10-01), Osborne et al.
patent: 4439776 (1984-03-01), Zeiler
patent: 4616234 (1986-10-01), Wint
patent: 4928115 (1990-05-01), Fagerquist et al.

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