Patents Assigned to Compa Computer Corporation
  • Patent number: 5440332
    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.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: August 8, 1995
    Assignee: Compa Computer Corporation
    Inventor: Lowell M. Good