Patent ID: 7798592
Filing Date: 2010-09-21
Classification: B41J

Abstract:
1. A droplet ejection device for supplying drive waveforms to multiple actuators provided in a droplet ejection head and ejecting droplets from nozzles corresponding to the actuators, comprising: an output control signal generator for generating an output control signal in which the multiple nozzles are associated with ejection/non-ejection of a droplet, according to drawing data; a storage device for storing information in which the multiple nozzles are associated with ranks set according to the weights of droplets; a drive waveform generator for generating drive waveforms associated with the ranks, the drive waveforms correcting the weights of the droplets to a predetermined weight; a common select control signal generator for generating a common select control signal in which the multiple nozzles are associated with the drive waveforms corresponding to the ranks, using the information stored in the storage device; and an output device for outputting the drive waveforms corresponding to the ranks to the actuators of the nozzles, according to the common select control signal and the output control signal, wherein the common select control signal generator generates the common select control signal before the output control signal is generated, and the output device outputs the drive waveforms corresponding to the ranks, to the actuators of the nozzles, using the common select control signal generated in advance, each time the output device receives the output control signal.