Fluid ejection devices and methods thereof are disclosed in the present disclosure. A method includes establishing fluid communication between an ejection chamber and a fluid supply chamber of the fluid ejection device such that the ejection chamber includes a nozzle and an ejection member to selectively eject fluid through the nozzle. The method also includes detecting at least one impedance in the fluid by a sensor unit having a sensor plate.
申请公布号
EP2741918(A1)
申请公布日期
2014.06.18
申请号
EP20110874641
申请日期
2011.10.24
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人
VAN BROCKLIN, ANDREW L.;GHOZEIL, ADAM L.;ANDERSON, DARYL E.