| 主权项 |
1. A droplet discharging apparatus comprising:
a recording head that includes
a plurality of pressure chambers that communicate with a plurality of nozzles, respectively, each of the pressure chambers reserving liquid,an oscillation plate provided over the pressure chambers to form an elastic wall of each of the pressure chambers,a plurality of piezoelectric elements provided to face the pressure chambers, respectively, via the oscillation plate, andan in-head reservoir, provided near the pressure chambers, that supplies liquid to the pressure chambers; a liquid circulation unit that includes
a liquid reservoir that reserves liquid, anda liquid transporting pipe that transports liquid between the in-head reservoir of the recording head and the liquid reservoir, the liquid circulation unit circulating liquid between the in-head reservoir and the liquid reservoir; a drive waveform generation unit that generates a drive waveform that drives each of the piezoelectric elements; a remaining oscillation detection unit that detects remaining oscillation generated in at least one of the pressure chambers after driving the respective piezoelectric element; a status determining unit that determines a sedimentation status of a component in liquid in the in-head reservoir based on the remaining oscillation detected by the remaining oscillation detection unit; and a control unit that controls a liquid circulation operation of the liquid circulation unit in order to dissolve the sedimentation status of the component in the liquid in the in-head reservoir based on the sedimentation status determined by the status determining unit. |
