Cross talk in piezo inkjet

Cross talk is the effect that neighboring channels can also be influenced by the actuation of a channel. Generally, the basis of piezo inkjet printers is the use of a piezoelectric element to convert an electrical driving voltage into a mechanical deformation of an ink chamber, which generates the pressure required for the drop formation from a nozzle. This chapter discusses two versions of the shear mode inkjet, the shared-wall principle, where the piezo ceramic is also the channel plate, and the shear mode with the actuator as a separate outer layer, which covers the channel plate. To generate pressure waves in the ink channels, the speed of the deformation of the printhead must be on the same time scale as the channel acoustics. The impact of residual vibrations on the drop properties is also influenced by cross-talk effects.