There are provided an ejection actuator that ejects ink from a nozzle, and a driver chip that supplies a signal for driving the ejection actuator. In a first location, the driver chip is sandwiched between a flat plate member and an elastic member. The elastic member biases the driver chip to the flat plate member. The elastic member is supported by the support member. A restricting portion is provided on at least either one of the support member and the flat plate member. When the support member and the flat plate member get close to each other in a second location different from the first location, the restricting portion restricts movement of at least either one of the support member and the flat plate member so as to prevent the driver chip and the support member in the first location from getting closer to each other beyond a minimum distance. Here, the minimum distance means a distance between the support member and the flat plate member in the first location at the time when the elastic member is compressed to the maximum limit.