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US 9,283,747 B2Granted
Fluid ejection devices and methods thereof
AssigneeHewlett-Packard Development Company, L.P.
InventorsAndrew L Van Brocklin, Adam L Ghozeil, Daryl E Anderson
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Abstract
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.
Claims10
A fluid ejection device, comprising:
- a fluid supply chamber to store fluid;
- a plurality of ejection chambers including nozzles and corresponding ejection members to selectively eject the fluid through the respective nozzles;
- a channel to establish fluid communication between the fluid supply chamber and the ejection members;
- a temperature adjustment module to establish at least one temperature of the fluid of the fluid ejection device;
- and
- a sensor unit having a sensor plate, the sensor unit to detect at least one impedance in the fluid corresponding to the at least one temperature;
- wherein the sensor unit detects a plurality of impedances in the fluid corresponding to the at least one temperature at predetermine time periods.
4 more elements
A fluid ejection device, comprising:
- a fluid supply chamber to store fluid;
- a plurality of ejection chambers including nozzles and corresponding ejection members to selectively eject the fluid through the respective nozzles;
- a channel to establish fluid communication between the fluid supply chamber and the ejection members;
- a temperature adjustment module to establish at least one temperature of the fluid of the fluid ejection device;
- and
- an air bubble detect micro-electro-mechanical systems (ABD MEMS) pressure sensor to detect at least one impedance in the fluid corresponding to the at least one temperature, the ABD MEMS including a sensor plate;
- wherein the ABD MEMS detects a plurality of impedances in the fluid corresponding to the at least one temperature at predetermine time periods.
4 more elements
Dependencies are inferred from the claim text.