Patent ID: 9463635
Filing Date: 2016-10-11
CPC Classification: B41J

Claim Text:
1. A liquid ejecting apparatus comprising: an ejecting head ejecting a liquid from ejecting nozzles, the ejecting head including a head chamber that stores the liquid; a liquid supply unit for mounting a liquid container that stores the liquid; a liquid supply passage communicating with the head chamber, the liquid supply passage supplying the liquid ejected from ejecting nozzles; a liquid passage communicating with the liquid container mounted to the liquid supply unit and connecting to the liquid supply passage for supplying the liquid stored in the liquid container toward the ejecting head via the liquid supply passage; a chamber part provided in the liquid supply passage, the chamber part having a wall formed with a thin film that transforms corresponding to a pressure fluctuation of the chamber part; a connecting passage communicating with the head chamber and connected to a connection portion away from the head chamber rather than the chamber part in the liquid supply passage, the connecting passage forming a circulation passage in cooperation with the liquid supply passage and the head chamber; and a circulation pump provided in the circulation passage configured to circulate the liquid in the circulation passage when driven, the circulation pump sucking the liquid inside the head chamber without going through the chamber part, wherein the liquid is circulated to flow in a direction toward the head chamber from the chamber part in the liquid supply passage and to flow in a direction toward the connection portion from the head chamber in the connecting passage, wherein the liquid ejected onto a medium from ejecting nozzles is supplied to the head chamber from the liquid supply passage with liquid flow toward the head chamber in the connecting passage being restricted via a check valve; wherein the liquid ejecting apparatus is configured such that liquid supply and liquid circulation is performed by use of a common pump, the common pump being the circulation pump.