Inkjet printhead device, fluid ejection device, and method thereof

摘要

An inkjet printhead device, fluid ejection device and method thereof are disclosed. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, and a channel to establish fluid communication between the fluid supply chamber and the ejection chamber. The fluid ejection device also includes a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the at least ejection chamber.

主权项

1. A fluid ejection device, comprising:
a fluid supply chamber to store fluid; a plurality of ejection chambers comprising 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 chambers; and a pressure sensor unit having a sensor plate, the sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in at least one ejection chamber, wherein a diameter of a respective nozzle corresponding to the at least one ejection chamber is greater than diameters of respective nozzles corresponding to respective ejection chambers other than the at least one ejection chamber.