Inkjet printing system, fluid ejection system, and method thereof

摘要

An inkjet printing system, fluid ejection system and method thereof are disclosed. The fluid ejection system includes a fluid ejection device and a determination module to determine a supply condition based on the count value output by the converter module. 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, 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 ejection chamber. The fluid ejection system also includes a converter module to output a count value corresponding to the voltage value output by the pressure sensor unit.

主权项

1. A fluid ejection system, comprising:
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, wherein at least one of the plurality of ejection chambers corresponds to a test chamber that comprises a nozzle with a diameter greater in size than diameters of nozzles corresponding to non-test election chambers;a channel to establish fluid communication between the fluid supply chamber and the ejection chambers;a pressure sensor unit having a sensor plate to output a voltage value corresponding to an amount of fluid in at least one ejection chamber; anda converter module to receive an output signal from the pressure sensor unit and output a count value corresponding to the voltage value of the received output by the pressure sensor unit; a refill determination module to determine an amount of time to refill the at least one ejection chamber; and a count determination module to determine a supply condition based on the count value output by the converter module.