Liquid supply system, ink jet recording head, ink jet recording apparatus and liquid filling method

The shock of the invention overcame provided with a bubble for making of the filter is square, can reduce the waste of container. The water room (201) is provided with a Zimo box (201b) and a liquid cavity body (201f), wherein one Zimo box (201b) is used for storing from the external supplying ink jetting, wherein one liquid cavity body (201f) is used for storing from Zimo box (201b) supplying ink jetting, and ink directly to nozzle (201g), and movement of the upper row of container. A filter (201c) is arranged between Zimo box (201b) and cavity body (201f). The liquid cavity body (201f) keeping predetermined amount ink of a chute, namely, making the liquid cavity body (201f) adopts a gas the ink and filter (201c) and.