LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE DEVICE

To provide an ink jet head capable of enhancing cooling efficiency and stabilizing a temperature even if a heating value of a drive control IC is increased.SOLUTION: A liquid discharge head includes: a head body which has a plurality of discharge holes; and a supply section which supplies liquid to the head body. The head body is provided with a water-cooling unit 100 which is arranged to be separated by a fixed distance is supplied with liquid passed through the head body and is formed with a flow passage through which liquid is passed. The liquid discharge head further includes: a first substrate 70 which is arranged between the head body and the water-cooling unit and is mounted with a control element; a second substrate which has one end side connected to the head body and the other end side connected to the first substrate and is mounted with a drive control element for driving the head body; and a heat conductive member which has one end side which is brought into contact with the inside of the water-cooling unit and the other end side which is thermally connected to the drive control element.SELECTED DRAWING: Figure 10 【課題】駆動制御用ＩＣの発熱量が増加しても、冷却効率を高めて温度の安定化を図ることができるインクジェットヘッドを提供する。【解決手段】液体吐出ヘッドは、複数の吐出孔を有するヘッド本体と、ヘッド本体に液体を供給する供給部を備えている。ヘッド本体には、一定距離離間して配置され、ヘッド本体を通過した液体が供給され、内部を液体が通流する冷却流路が形成された冷却ユニット１００を備えている。ヘッド本体と冷却ユニットとの間には、制御素子が実装された第１の基板７０が配置され、一端側がヘッド本体に接続され、他端側が第１の基板に接続され、ヘッド本体を駆動する駆動制御用素子を搭載する第２の基板と、一端側が冷却ユニットの内部に接触し、他端側が駆動制御用素子に熱的に接続された熱伝導部材とを備えている。【選択図】図１０