Recording device using an electret transducer

Details Recording device using an electret transducer Recording device using an electret transducer

1993-06-09

1997-07-29

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 204

Patent

active

056526091

ABSTRACT:
A recording device is disclosed which in a preferred embodiment comprises a recording head comprising at least one chamber having an orifice therein, at least a portion of the chamber comprising an electret transducer; a recording medium for supplying recording medium from a reservoir to the chamber, and for a voltage pulse source and electrode applying a voltage pulse to the electret to deform the electret to change the volume of the chamber and eject a quantity of recording medium from the chamber through the orifice. The invention and device is further useful in manufacturing high density printheads, operable with multiple recording mediums to print recording medium on a recording surface.

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Gerhard-Multhaupt, R. "Electrets: Dielectrics With Quasi-Permanent Charge or Polarization". IEEE Transactions on Electrical Insulation. vol. EI-22 No. 5, Oct. 1987.

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