Head unit and liquid dispensing apparatus

Abstract

Provided is a head unit including a unit temperature detection circuit configured to output a unit temperature signal including unit temperature information indicating a temperature of the head unit, a print head configured to dispense liquid when receiving a drive signal, a dispensing counter configured to count a dispensing timing of the liquid from the print head, 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 signal acquisition unit located at the other side in a stacking direction with respect to a vibration plate and configured to acquire temperature information corresponding to a temperature of a pressure chamber and output the acquired 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 a count value of the dispensing timing reaches a predetermined value.