Apparatus for page wide ink jet printing

Details Apparatus for page wide ink jet printing Apparatus for page wide ink jet printing

1992-07-06

1995-08-08

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 68, B41J 2155, B41J 2045

Patent

active

054403324

ABSTRACT:
A page wide ink jet printhead employed in a printer for printing characters on a print medium. The print medium progresses in a path through the printer during printing. The page wide ink jet printhead includes print nozzles selectively aligned across the width of the print medium allowing the printhead to remaining stationary; a means for selectively ejecting ink through particular nozzles, which means is formed of a piezoelectric material which has microgrooves therein; ink residing in the microgrooves for ejection therefrom; sidewalls of the microgrooves which act as actuators to cause ink to be ejected from the microgrooves in response to an electrical pulse supplied thereto; and electrical circuitry to appropriately direct the electrical pulse to create an electric field across particular microgrooves to obtain a desired print character formed from ink droplets ejected from the microgrooves.

REFERENCES:
patent: 4312009 (1982-01-01), Lange
patent: 4510509 (1985-04-01), Horike et al.
patent: 4580148 (1986-04-01), Domoto et al.
patent: 4887100 (1989-12-01), Michaelis et al.
patent: 5189437 (1993-02-01), Michaelis et al.
patent: 5252994 (1993-10-01), Narita et al.

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