Patent ID: 7073727

Claim:
A discharge device for discharging viscous liquid toward a target, comprising: a head having a plurality of nozzles and a corresponding plurality of pressure-generating elements; a drive-signal generating device that generates a drive signal including a plurality of drive pulses; a control device that outputs waveform selection data defining which of the plurality of drive pulses is to be applied to the plurality of pressure-generating elements, the control device including a storage unit that stores nozzle data corresponding to variations in weight of the viscous liquid discharged from each of the plurality of nozzles when drive pulses having the same waveform are applied to corresponding pressure-generating elements, the control device generating and outputting waveform selection data on the basis of the nozzle data stored in the storage unit; and a switching device that selects predetermined drive pulses from the plurality of drive pulses and applies the selected drive pulses to the plurality of pressure-generating elements on the basis of the waveform selection data output by the control device.