Method and apparatus for page wide ink jet printing

Details Method and apparatus for page wide ink jet printing Method and apparatus for page wide ink jet printing

B - Operations, Transporting

41

J

B41J 2/155 (2006.01) B41J 2/16 (2006.01)

Patent

CA 2139230

A page wide ink jet printhead (2) employed in a printer for printing characters on a print medium. The print medium pro- gresses in a path through the printer during printing. The page wide ink jet printhead (2) includes print nozzles (26) 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 (8), which has microgrooves (10) therein; ink resid- ing in the microgrooves for ejection therefrom; sidewalls of the microgrooves which act as actuators to cause ink to be ejected from the microgrooves (10) 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 drop- lets ejected from the microgrooves.

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