Liquid ejecting apparatus and maintenance method thereof

摘要

A liquid ejecting apparatus comprising a liquid ejection head unit having nozzles for ejecting a liquid onto a medium; a liquid storage unit to store the liquid; a first supply passage that communicates with the liquid ejection head unit and the liquid storage unit; a second supply passage that communicates with the liquid ejection head unit, the liquid storage unit, and the first supply passage in the liquid ejection head unit; a valve in the first supply passage; and a liquid driving unit in the second supply passage that moves the liquid in the liquid ejection head unit and the supply passages when driven. The liquid is moved toward the liquid ejection head unit in the second supply passage by the liquid driving unit in a state in which the valve restricts the flow of the liquid such that the liquid is discharged from the nozzles.

主权项

1. A liquid ejecting apparatus comprising:
a liquid ejection head unit that ejects a liquid via nozzles; a first passage that communicates with the liquid ejection head unit, the first passage supplying the liquid to the liquid ejection head; a second passage that communicates with the first passage in the liquid ejection head unit, the second passage forming, in cooperation with the first passage, a circulation passage; a valve that is provided in the first passage to allow and restrict flow of the liquid; a flexible member that constitutes part of an inner wall of the circulation passage, the flexible member deforming in accordance with a change of liquid pressure in the circulation passage; and a liquid driving unit that is provided in the second passage, the liquid driving unit being configured to circulate the liquid in the circulation passage when driven; wherein the liquid driving unit is driven in a state in which the valve restricts flow of the liquid such that the liquid is discharged from the nozzles.