Determining a healthy fluid ejection nozzle

A method of determining a healthy fluid ejection nozzle includes measuring changes in impedance across the nozzle as fluid passes through it. A printhead includes a metal probe that intersects an ink nozzle and an integrated circuit to sense a change in impedance across the nozzle through the metal...

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Bibliographische Detailangaben
Hauptverfasser: Chen, Chien-Hua, Schulte, Donald W, Mcmahon, Terry, Liao, Ying-Chih, Hall, David D
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method of determining a healthy fluid ejection nozzle includes measuring changes in impedance across the nozzle as fluid passes through it. A printhead includes a metal probe that intersects an ink nozzle and an integrated circuit to sense a change in impedance across the nozzle through the metal probe.