Ink drop writing apparatus

Details Ink drop writing apparatus Ink drop writing apparatus

1976-03-17

1977-11-29

Hartary, Joseph W.

Recorders

Record receiver deforming

G01D 1800

Patent

active

040608131

ABSTRACT:
In an apparatus of the type wherein ink under pressure is applied to a nozzle which is vibrated so that the ink emitted from the nozzle thereafter breaks up into ink drops which are charged in a charging tunnel in response to a video signal, means are provided, in accordance with this invention, for compensating the amount of charge on each ink drop or the strength of the deflecting field action on the ink drop, on the basis of information from a detecting means which detects the amount of deflection of one or more calibrating drops periodically so that the amount of deflection of the drop of writing fluid for a given charge may be held to a predetermined value.

REFERENCES:
patent: 3596276 (1971-07-01), Lovelady
patent: 3886564 (1975-05-01), Naylor
patent: 3971039 (1976-07-01), Takano
Ruddy, G. A., Position & Synchronization Sensor for an Ink Jet Printer; IBM Tech. Disc. Bulletin, vol. 15, No. 9, Feb. 1973, pp. 2785-2786.
Fillmore et al., Deflection Servo Initializaton; IBM Tech. Disc. Bulletin, vol. 16, No. 3, Aug. 1973, pp. 1031-1033.
Boehner et al.; Two-Level Ink Jet Deflection Control System, IBM Tech. Disc. Bulletin, vol. 16, No. 10, Mar. 1974, 3308-3311.
Chen et al.; Feedback for Synchronized Pressure Jet Using Optical Sensor, IBM Bulletin, vol. 16, No. 12, May 1974, pp. 3877-3878.

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