Bubble removing method for inkjet head and bubble removing apparatus for inkjet head

摘要

It is an object of the present invention to provide a bubble removal method and a bubble removal device for an inkjet head that can efficiently remove residual bubbles in an ink storage chamber provided with a filter and reduce the amount of waste ink from a nozzle. The ink storage chamber 41 is divided into an upstream ink chamber 411 and a downstream ink chamber 412 with a filter 42 in between, and a first ink port 44 and a second ink port 45 are provided on the upstream side of the upstream ink chamber 411, and the downstream side A third ink port 46 is provided in the upper part of the ink chamber 412 without the filter 42, the flow path of the third ink port 46 is closed, and the ink that has flowed into the upstream ink chamber 411 from the first ink port 44 is Air bubbles in the upstream ink chamber 411 are removed by discharging from the second ink port 45, and then the flow path of the second ink port 45 is closed, and the downstream ink chamber 412 is passed through the filter 42 from the first ink port 44. Ink flow Is solved by the ink on the downstream side ink chamber 412 is discharged from the third ink port 46 removes the air bubbles on the downstream side ink chamber 412.