Liquid discharging head and liquid discharging device

The liquid discharging head comprising:

• a discharge port that discharges a liquid;
• a pressure chamber that communicates with the discharge port;
• and
• an energy generating element that is disposed in the pressure chamber,
• wherein part of the discharge port is narrowed, and a shortest diameter of the part of the discharge port that has been narrowed is 5 μm or less.

A liquid discharging device comprising:

• a liquid discharging head including:
• a discharge port that discharges a liquid;
• a pressure chamber that communicates with the discharge port;
• and
• an energy generating element that is disposed in the pressure chamber,
• wherein the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and
• wherein an interval between the projections at a location where the projections are closest to each other is 5 μm or less;
• a supply path that supplies a liquid to the pressure chamber;
• and
• a recovery path that recovers the liquid from the pressure chamber,
• wherein the supply path and the recovery path are connected to the pressure chamber so as to allow a circulatory flow of a liquid flowing from the supply path to the recovery path via the pressure chamber to be generated;
• and
• a liquid supplying system that is connected to the supply path and the recovery path, and includes a tank which stores a liquid and a pump which causes the liquid to flow.