In a piezoelectric ink-jet printhead, and a method of manufacturing a
nozzle plate, the piezoelectric ink-jet printhead includes a flow path
plate having an ink flow path including pressure chambers to be filled
with ink to be ejected, a piezoelectric actuator formed on an upper
surface of the flow path plate and for supplying a driving force for ink
ejection to the pressure chambers, and a nozzle plate bonded to a lower
surface of the flow path plate including nozzles for ejecting ink from
the pressure chambers bored through the nozzle plate. The printhead may
further include a heater formed on a lower surface of the nozzle plate
for heating ink in the ink flow path and/or a temperature detector formed
on a lower surface of the nozzle plate or on an upper surface of the flow
path plate.