Backpressure control unit, liquid ejecting head, and liquid ejecting apparatus

A backpressure control unit that introduces a liquid from an external liquid holding unit and supplies the liquid to a main head unit for ejecting the liquid via a nozzle opening, the backpressure control unit comprising:

• a flow channel member including an introduction channel that introduces the liquid from the liquid holding unit, a valve member that configures a backpressure control valve, and a supply channel that supplies the liquid that has exited the valve member to the main head unit;
• and
• a cover including a base portion that holds the flow channel member on one side of the flow channel member, a cover portion that covers the flow channel member on the other side of the flow channel member and houses the flow channel member in a space configured between the base portion and the cover portion, and a supply port that conducts the liquid to the main head unit downstream from the supply channel,
• wherein the flow channel member is divided into a plurality of blocks.