Charge amplitude detection for ink jet system printer

Details Charge amplitude detection for ink jet system printer Charge amplitude detection for ink jet system printer

1974-03-12

1976-04-27

Hartary, Joseph W.

Recorders

Record receiver deforming

G01D 1518

Patent

active

039538605

ABSTRACT:
It is essential for an ink jet system printer of the charge amplitude controlling type that an ink drop separation rhythm is in correct phase relation with respect to the application of charging signals. Detection of such phase relation may be achieved by forming phase detecting ink drops in addition to printing ink drops, charging these phase detection drops with phase detection signals and then measuring the amplitude of the charges on the individual drops. One approach to detecting the amplitude of charge on the phase detecting drops is to establish a panel shaped or strip shaped detection electrode adjacent the wake of the ink drops thereby enabling said detection by virtue of electrostatic induction.

REFERENCES:
patent: 3769632 (1973-10-01), Jolisburger et al.
patent: 3787882 (1974-01-01), Fillmore et al.
patent: 3810194 (1974-05-01), Tokunaga et al.
patent: 3836912 (1974-09-01), Ghougasian et al.
Ruddy, G. A.; Position and Synchronization Sensor for an Ink Jet Printer; IBM Tech. Disc. Bulletin, Vol. 15, No. 9, Feb. 1973, pp. 2785-2786.

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