CROSS-NOZZLE ABNORMALITY DETECTION IN DROP DETECTOR SIGNALS

In an example, a print apparatus includes a printhead carriage to receive a printhead comprising a print agent ejection nozzle, a drop detector to acquire a signal indicative of variations in a parameter detected by the drop detector over a period of drop detection; a memory to store nozzle location...

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Bibliographic Details
Main Authors GRACIA VERDUGO, Antonio, VINETS ALONSO, Andreu, DEOCON MIR, Javier
Format Patent
LanguageEnglish
Published 15.09.2022
Subjects
CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:In an example, a print apparatus includes a printhead carriage to receive a printhead comprising a print agent ejection nozzle, a drop detector to acquire a signal indicative of variations in a parameter detected by the drop detector over a period of drop detection; a memory to store nozzle location information of the nozzles; and processing circuitry comprising a correlation module to correlate the drop detector signal with the nozzle location information wherein the processing circuitry comprises an abnormality detection module to determine, based on an output of the correlation module, a cross-nozzle abnormality that affects a subset of nozzles.
Bibliography:Application Number: US201917634506