Inprintable medium dispenser

摘要

An imprintable medium dispenser includes a chamber, a nozzle, and an actuator connected to the chamber and configured to be actuated and thereby generate a pressure wave within the chamber such that imprintable medium is dispensed from the nozzle. The imprintable medium dispenser is provided with a control circuit which includes a monitoring apparatus configured to receive a transient oscilliniun signal generated when the actuator is actuated, and to monitor the operation of the imprintable medium dispenser by monitoring the transient oscillation signal.