The working principle of the inkjet printer is under the pressure of the ink supply pump. The ink passes through the ink path pipe from the ink tank to adjust the pressure, viscosity, and enter the spray gun. As the pressure continues, the ink is ejected from the nozzle, and the ink passes through the nozzle. The action of the piezoelectric crystal is broken into a series of continuous droplets of equal and equal size, and the jet of ink continues to move downward through the charging pole, and the ink droplets are separated from the ink line in the charging pole. A certain voltage is applied to the charging pole, and when the ink droplet is separated from the conductive ink line, a negative electric charge proportional to the voltage applied by the charging pole is instantaneously carried. By changing the voltage frequency of the charging pole to be the same as the frequency of the ink droplet breaking, each of the ink droplets can be charged with a predetermined negative charge, and the ink flow continues to move downward after the pressure continues, from two separate The deflector with positive and negative voltage passes through the middle, and the charged ink droplets will deflect when passing through the deflector. The degree of deflection depends on the amount of charge. The uncharged ink droplets will not deflect, and will flow downwards and flow into the recovery tube. Finally, it is recycled back to the ink tank through the recycling pipe. The charged and deflected ink drops fall at a certain speed and angle onto the object passing in front of the vertical nozzle.     Daily maintenance and maintenance of the printer     The following preventive measures require regular and irregular work to keep your printer in good working order.     Check the level of ink and solvent. When low, it must be added in time according to the procedure.     Clean and dry the sprinkler system, pay attention to the automatic cleaning procedure when switching on and off.     Clean the fan filter regularly. Regularly clean the mounting and fixing of the electric eye.     Regularly check the mounting and fixing of the print head and the electric eye. Check the power and ground connections regularly.