Circuit for operating recording nozzles

Details Circuit for operating recording nozzles Circuit for operating recording nozzles

1981-08-27

1983-08-09

Griffin, Donald A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310317, G01D 1518, H01L 4110

Patent

active

043982042

ABSTRACT:
A circuit for operating recording nozzles in ink mosaic recorders, each nozzle having an associated ink channel cylindrically surrounded by a piezoelectric transducer having a diameter which expands upon the application of a voltage thereto having a polarity which is opposite to the direction of polarization of the transducer and contracts upon the application of a voltage having a polarity in the direction of the transducer polarization, has a charging circuit which connects the transducers in a rest state to a common voltage source having a polarity in the direction of polarization of the transducers so that the transducers assume a state of contracted diameter. The circuit further includes a discharging circuit operated by a control input for each transducer operable for discharging an ink droplet from the nozzles after ink is drawn into the channels by operation of the charging circuit. The charging circuit contains a switching arrangement so that the charging circuit can be interrupted independently of the operation of the discharging circuit.

REFERENCES:
patent: 4282535 (1981-08-01), Kern et al.

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