Head unit and liquid dispensing apparatus

Abstract

Provided is a head unit including an elapsed time acquisition unit configured to acquire elapsed time information, a unit temperature detection circuit configured to output a unit temperature signal including a unit temperature information indicating a temperature of the head unit, a print head configured to dispense liquid when receiving a drive signal, and a temperature information output circuit configured to acquire a temperature signal indicating a temperature of the print head and output a temperature information signal based on the temperature signal, in which the print head includes a temperature detection unit located at the other side in a stacking direction with respect to a vibration plate and configured to detect temperature information corresponding to a temperature of the pressure chamber and output the detected temperature information as the temperature signal, the temperature information output circuit includes a correction circuit configured to correct the temperature signal, and the correction circuit corrects the temperature signal based on the unit temperature information at a predetermined timing after the elapsed time information acquired by the elapsed time acquisition unit elapses a predetermined time.