Controlling droplet behaviour and quality of DoD inkjet printer by designing actuation waveform for multi-drop method

Abstract

There are two techniques that can be used to improve the print quality of an inkjet printer, namely binary and greyscale techniques. In the greyscale technique, the method used is the multi drop ejection method. In the multidrop ejection method, it is more difficult to control droplet behaviour because the possibility of residual vibration and crosstalk will be higher, which can cause satellites and ligaments that can make poor print quality. In this study, we reveal how to control droplet behaviour in a multidrop ejection method so that it can produce good quality droplets. The comparison of droplet image that generated from basic waveform with the waveform using preliminary and suppressing vibration, without and with adjustments of actuation voltage was also studied.