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US 8,757,750 B2Granted
Crosstalk reduction in piezo printhead
AssigneeHewlett-Packard Development Company, L.P.
InventorsNeel Banerjee, Andrew L. Van Brocklin, David Pidwerbecki, Christopher Reimer
Life of this patent
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Abstract
Crosstalk in a piezo printhead is reduced by selecting an actuation signal for a nozzle, determining a time delay and a pulse width extension based on adjacent actuation signals of adjacent nozzles, and applying the time delay and pulse width extension to the actuation signal.
Claims20
A method to reduce crosstalk in a piezo printhead comprising:
- selecting an actuation signal for a nozzle;
- determining a time delay and a pulse width extension based on adjacent actuation signals of adjacent nozzles;
- and
- applying the time delay and pulse width extension to the actuation signal.
1 more element
A circuit for reducing crosstalk in a piezo printhead comprising:
- a time delay element to select a time delay based on actuation signal values of adjacent nozzles and to apply the time delay to an actuation signal of a current nozzle;
- and
- a pulse width extension element to select a pulse width extension based on the actuation signal values of the adjacent nozzles and to apply the pulse width extension to the actuation signal of the current nozzle.
A crosstalk reduction system, comprising:
- a piezo printhead having an array of nozzles;
- a movable membrane to eject a jetable material through a nozzle by adjusting volume in an associated nozzle chamber;
- a piezoelectric material to move the membrane by application of an actuation voltage signal to the piezoelectric material;
- and
- a nozzle circuit associated with each of the nozzles, the nozzle circuit including a time delay element to delay the actuation voltage signal based on adjacent actuation voltage signals of adjacent nozzles and a pulse width extension element to extend a pulse width of the actuation voltage signal based on the adjacent actuation voltage signals of the adjacent nozzles.
2 more elements
Dependencies are inferred from the claim text.