Patent ID: 6416149
Filing Date: 2002-07-09
Classification: B41J

Abstract:
A method of driving an ink jet apparatus that comprises a nozzle from which an ink droplet is ejected, an ink channel filled with ink and connected to the nozzle, an actuator that changes a volumetric capacity of the ink channel to generate a pressure wave in the ink channel, and a controller that applies an ejection pulse signal to the actuator to cause ink droplet ejection from the nozzle, the method comprising:judging whether another dot is present at at least one of immediately before and after a required dot to be formed and, if so, judging a size of the another dot present at the at least one of immediately before and after the required dot to be formed; and adjusting a drive waveform of an ejection pulse signal for forming the required dot based on results of the judging step.