| 摘要 |
An inkjet printhead assembly comprising an array of nozzles fed by a corresponding ink inlet. An ink chamber corresponding to the array of nozzles is fluidly connected to the ink inlet. An air extraction chamber includes an air chamber, a one-way relief valve having an open position that allows venting of the air chamber to ambient, and a closed position that does not allow venting of the air chamber to ambient. A compressible member forces air to be vented from the air chamber through the one-way relief valve in its open position. It also applies a reduced air pressure to a membrane while the one-way relief valve is in its closed position.
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