Pressurized ink is supplied to the print head from the controller.
Ink is fed to the nozzle which has the piezoelectric oscillator and discharge hole.
The ink is discharged while being oscillated by the piezoelectric oscillator, and it is simultaneously given a negative electrostatic charge. The ink is formed into an ink column, but when saturated with the negative charge, the ink becomes particles, and those particles separate from the ink column.
The electrostatic detection sensor monitors the ink particles to ensure they receive the appropriate electrostatic charge. This prevents malfunction.
The ink particles that fly from the nozzle pass between two deflecting electrodes where an electrical field is generated by a voltage of around 7000 V. At this time, a bending force acts on the ink particles according to their electrostatic charge to change the direction they fly in. Together with this, the target or print head is moved in the vertical direction to print by creating the shapes of text and numbers.
Ink not used for printing is collected in a pipe called the gutter and reused.