Incremental printing of symbolic information – Ink jet – Controller
Patent
1996-03-29
1998-05-12
Wong, Peter S.
Incremental printing of symbolic information
Ink jet
Controller
347 14, 347 57, B41J 2938, B41J 205
Patent
active
057513023
ABSTRACT:
A method of controlling the operation of an ink jet printhead having a burn voltage applied to a transducer nucleating an ink bubble to cause an ink droplet to be ejected from an ink ejecting orifice. The method includes determining a threshold power dissipated by the transducer sufficient to cause the bubble to nucleate, the threshold power being determined by a firing pulse having a pulse length and a threshold voltage, selecting the pulse length of the firing pulse to be approximately equal to a pulse length necessary to achieve the highest effective power dissipation in the transducer, and selecting the burn voltage as a function of the threshold voltage. Changes to the threshold power dissipated by the transducer necessary to eject from the ink ejecting orifice are determined and the pulse length of the firing pulse is adjusted accordingly.
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patent: 5483265 (1996-01-01), Kneezel et al.
Krieger Daniel J.
Patel Rajnikant B.
Wong Peter S.
Xerox Corporation
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