Patent ID: 8764176

Claim:
A liquid ejecting apparatus comprising: a liquid ejecting head that ejects a liquid; a first liquid flow channel that supplies the liquid from an upstream side corresponding to a liquid supply source side to the liquid ejecting head that is located on a downstream side; a pressure control valve that is provided in the first liquid flow channel and that opens as a result of a drop in pressure on the liquid ejecting head side; a check valve that is provided in the first liquid flow channel closer to the liquid supply source than the pressure control valve and that prevents backflow from the pressure control valve side toward the liquid supply source side; a second liquid flow channel, whose one end is connected to a connection portion on the pressure control valve side and whose other end is connected to a connection portion on the check valve side between the pressure control valve and the check valve in the first liquid flow channel, that with the first liquid flow channel configures a circulating flow channel in which the liquid circulates; a circulating pump that is provided in the second liquid flow channel and that causes the liquid to flow in one direction in the circulating flow channel; and a third liquid flow channel whose one end is connected to the circulating flow channel and whose other end is connected to an area of the first liquid flow channel that is closer to the liquid supply source side than the check valve.