AbstractUniform, stable drop generation is the key technology for continuous ink jet printing. Previously, the method to produce the standing wave driven by the high polymer piezoelectric transducer had been utilized for acoustic excitation. However, the characteristics varied from assembly to assembly and were unstable to the environmental changes. As a new alternative approach, the Traveling‐Wave Drop Generator (TWDG) was developed in which the acoustic wave is generated in one end, and then travels to the other end of the jet array. The characteristic results showed that this generator could fully solve the forementioned problems, and it has a simplified structure.