By controlling the internal gear pump or supplying compressed gas from the outside of the machine, the punch machine puts a certain pressure on the ink in the system, allowing the ink to be emitted through a few dozen micron aperture nozzles. The crystal oscillation signal added to the top of the nozzle splits the continuous ink lines into ink droplets of the same frequency, equal size, and a certain distance. Then, the ink droplets are charged separately when passing through the charging electrode. 

The amount of charge carried by the central processor is The CPU controls; The electrode is then tested to see if the actual charge and phase of the ink drop are correct. Finally, the charged ink droplets deflect in the deflection electrode to form a deflection electric field, shoot from the nozzle, and hit the product surface in different positions to form various types of text, patterns, and other signs. Without being charged, the ink droplets enter the recycling tank and re-enter the ink circulation system inside the machine.