It is an object of the invention to provide a droplet ejection apparatus
that can carry out appropriate recovery processing easily and surely in
the recovery processing for droplet ejection heads when the apparatus is
powered on. The droplet ejection apparatus of the invention has a driving
circuit and a plurality of droplet ejection heads. Each of the droplet
ejection heads includes a cavity filled with a liquid, a nozzle
communicated with the cavity, an actuator driven by the driving circuit,
and a diaphragm displaced by the actuator, and ejects the liquid within
the cavity through the nozzle in the form of droplets by driving the
actuator with the driving circuit. The droplet ejection apparatus further
includes: ejection failure detecting and recovery processing determining
means (10) which detects a residual vibration of the diaphragm at least
when the apparatus is powered on, and then detects an ejection failure of
the droplet ejection heads on the basis of a vibration pattern of the
detected residual vibration of the diaphragm and determines recovery
processing for eliminating the ejection failure; and recovery means 24
for carrying out the recovery processing determined by the ejection
failure detecting and recovery processing determining means.