LIQUID DISCHARGE HEAD, HEAD MODULE, AND LIQUID DISCHARGE DEVICE

To suppress displacement of a driver itself due to heat generation of the driver, and maintain a target discharge state.SOLUTION: A liquid discharge head includes a housing, a nozzle plate which is mounted on the housing and is formed with a nozzle for discharging a liquid, a valve body which is stored in the housing and opens/closes the nozzle, a driver which is provided on the end in the valve body opening/closing direction and drives the valve body, and a fixed member which is provided on the end in the driver driving direction, and is fixed to the housing, wherein a coefficient of linear expansion of the driver and a coefficient of linear expansion of the valve body and the fixed member have a relation of a reverse code, and a space between the driver and the valve body and a space between the driver and the fixed member are connected to each other through a heat transfer layer.SELECTED DRAWING: Figure 2 【課題】駆動体の発熱による駆動体自体の変位を抑制し、狙いの吐出状態を維持する。【解決手段】筐体と、前記筐体に取り付けられ、液体を吐出するノズルが形成されたノズル板と、前記筐体に収容され、前記ノズルを開閉する弁体と、前記弁体の開閉方向の端部に設けられ、前記弁体を駆動する駆動体と、前記駆動体の駆動方向の端部に設けられ、前記筐体に対して固定された固定部材と、を備え、前記駆動体の線膨張係数と、前記弁体および前記固定部材の線膨張係数とが逆符号の関係を成し、前記駆動体と前記弁体の間、および前記駆動体と前記固定部材の間を、伝熱層を介して接続している液体吐出ヘッド。【選択図】図２