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US 5,751,302 AGranted
Transducer power dissipation control in a thermal ink jet printhead
AssigneeXerox Corporation
InventorIvan Rezanka
Life of this patent
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AssigneeXerox Corporation
InventorIvan Rezanka
Estimating the term…
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.
A method of controlling the operation of an ink jet printhead including a transducer dissipating power in response to an electrical operating pulse applied thereto for nucleating an ink bubble to cause an ink droplet to be ejected from an ink ejecting orifice, comprising:
A method of controlling the operation of an ink jet printhead including a transducer dissipating power in response to an electrical operating pulse applied thereto for nucleating an ink bubble to cause an ink droplet to be ejected from an ink ejecting orifice, comprising:
Dependencies are inferred from the claim text.