Liquid ejection apparatus

摘要

A liquid ejection apparatus includes: a liquid ejection head including (i) an ejection opening portion, (ii) a supply flow passage, and (iii) an actuator, a first tank connected to the liquid ejection head to supply liquid to the supply flow passage; a pump for forcing the liquid in the first tank into the supply flow passage; and a controller. The controller executes: a first control for driving the actuator, or the actuator and the pump such that all the liquid in the first tank flows to the supply flow passage; and a second control for, after a completion of the first control, driving the actuator in a state in which the pump is stopped, to discharge the liquid in the supply flow passage from the ejection opening portion such that an amount of the liquid in the supply flow passage falls within a predetermined range.

主权项

1. A liquid ejection apparatus, comprising:
a liquid ejection head comprising:
an ejection opening portion from which the liquid ejection head ejects liquid;a supply flow passage through which the liquid is supplied to the ejection opening portion; andan actuator configured to apply ejection energy to the liquid in the supply flow passage to cause the liquid to be ejected from the ejection opening portion; a drive configured to drive the actuator to cause the liquid to be ejected from the ejection opening portion; a first tank connected to the liquid ejection head such that when the actuator is driven to eject the liquid from the ejection opening portion, the liquid is supplied to the supply flow passage by an amount corresponding to an amount of the liquid ejected; a pump configured to cause the liquid in the first tank to flow into the supply flow passage; and a controller configured to execute:
a first control in which the controller controls the actuator, or the actuator and the pump, to cause the liquid in the first tank to flow into the supply passage until the first tank becomes empty of the liquid; anda second control in which, after a completion of the first control, the controller controls the pump and the drive to drive the actuator in a state in which the pump is stopped, to discharge the liquid in the supply flow passage from the ejection opening portion such that an amount of the liquid in the supply flow passage falls within a predetermined range.