Numerical investigation of the effect of the transducer pulse on the drop ejection process

This study presents a detailed investigation on the effect of components of a single transducer pulse on the drop ejection process for a Picojet printhead, commercially available drop-on-demand (DOD) ink jet device. It is found in current results that the volume of the primary drop is closely related to the maximum displacement, Df of chamber wall induced by piezoelectric transducer in forward stage, while the velocity of the primary drop is dependent on the ratio of Df and Δτf, the time period of the forward stage. Moreover, the volume and the velocity of the primary drop are weakly dependent upon the conditions of the backward stage. It is also found that a decrease in time interval connecting forward stoke and backward stoke may suppress the formation of the satellite drops.