Ink Coding Machine

The inkjet printer atomizes the ink into tiny droplets through a high-voltage electric field, and then controls the spray direction and quantity of the droplets according to the information to be printed, forming a clear mark on the product surface, such as production date, batch number, barcode, QR code, etc.

The inkjet printer is a non-contact inkjet marking system controlled by a single-chip microcomputer. It applies a certain pressure to the ink in the system by controlling the internal gear pump or supplying compressed gas from the outside of the machine, so that the ink is ejected through a nozzle with an aperture of tens of microns. The crystal oscillation signal applied above the nozzle splits the ejected continuous ink line into ink droplets of the same frequency, equal size, and a certain spacing. Then, the ink droplets are charged separately when passing through the charging electrode, and the amount of charge they carry is controlled by the central processing unit CPU; then the detection electrode detects whether the actual charge and phase of the ink droplets are correct; finally, the charged ink droplets are deflected in the deflection electric field formed by the deflection electrode, ejected from the nozzle, and hit different positions on the surface of the product to form the required various text, patterns and other logos. The ink droplets that are not charged are hit into the recovery tank and re-enter the ink circulation system inside the machine.