Printers and controllers
AssigneeHewlett-Packard Development Company, L.P.
InventorsAntonio Gracia Verdugo, Andreu Vinets Alonso, Andrei Alexandru Dafinoiu
Life of this patent
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Abstract
Example implementations relate to a method to manage printhead operational life; the method comprising firing at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid, measuring a parameter associated with the drop of print liquid, and adjusting the firing parameter in response to the measuring to reduce the measured parameter associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.
Claims15
A method to manage printhead operational life;
- the method comprising firing at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid,
- measuring a characteristic associated with the drop of print liquid, and
- adjusting the firing parameter in response to the measuring to vary the measured characteristic associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.
The method of claim 3, in which adjusting the firing parameter in response to the characteristic associated with the drop of print liquid comprises adjusting the firing parameter to at least one of increase or decrease at least one, or both, of drop mass or drop velocity.
Machine readable storage storing machine executable instructions arranged, when executed, to manage printhead operational life;
- comprising
- machine executable instructions to fire at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid,
- machine executable instructions to measure a characteristic associated with the drop of print liquid, and
- machine executable instructions to adjust the firing parameter in response to the measuring to vary the measured characteristic associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.
A controller to manage printhead operational life, the controller comprising circuitry to fire at least one nozzle of a printhead according to an associated firing parameter to produce a respective drop of print liquid,
- circuitry to measure a characteristic associated with the drop of print liquid, and circuitry to adjust the firing parameter in response to the measuring to vary the measured characteristic associated with the drop of print liquid on a subsequent firing while maintaining the firing parameter at or above a predetermined parameter limit to maintain print image quality.
Dependencies are inferred from the claim text.