Patent ID: 7789497

Claim:
An ink-jet head comprising: a passage unit that has a nozzle and in which an ink passage communicating with the nozzle is formed; an ejection actuator that ejects, from the nozzle, ink contained in the ink passage formed in the passage unit; a driver chip that supplies to the ejection actuator a signal for driving the ejection actuator; a flat plate member that is in contact with the driver chip; an elastic member that biases the driver chip to the flat plate member; a support member that supports the elastic member and cooperates with the flat plate member to sandwich the driver chip therebetween at a first location with interposition of the elastic member in a particular direction; and a restricting portion provided on at least either one of the support member and the flat plate member in a second location which is different from the first location, the restricting portion is positioned such that a distance in the particular direction between the restricting portion and the other one of the support member and the flat plate member at the second location is less than a distance in the particular direction between the support member and the flat plate member at the first location, wherein the restricting portion is configured to prevent the distance between the flat plate member and the support member in the first location from becoming equal to or less than a minimum distance which is a distance therebetween in a state when the elastic member is compressed to the maximum limit.