Internal structure of continuous inkjet printers

This section explains the internal path and ink circulation principle of industrial inkjet printers.



Circulation principle

  • 1Main tank

    Stores the ink used in printing. Ink recovered from the gutter is also returned here.

  • 2Pump

    Pressurizes and feeds the ink from the main tank to the print head.

  • 3Pressure reducing valve

    Adjusts the ink pressure.

  • 4Piezoelectric element

    Oscillates the ink stream discharged from the nozzle to separate into ink particles.

  • 5Nozzle

    Discharges the ink.

  • 6Electrostatic electrode plates

    Applies a negative electric charge to the ink particles created from the ink stream.

  • 7Electrostatic sensor

    Monitors whether the ink particles have the proper electrostatic charge in them.

  • 8Deflecting electrode plates

    Generates a magnetic field between the electrode plates to deflect ink particles according to their charge. This directs ink particles onto the print target.

  • 9Gutter

    Collects the ink particles that are not used in printing.

  • 10Pump

    Retrieves the ink particles from the gutter and feeds them to the main tank.

  • 1Main tank

    Repeats the ink circulation.

Solvent tank
Supplies solvent to control viscosity when the ink in the main tank becomes too thick.
Ink tank
Supplies ink to the main tank when it is empty or when the ink is too thin.
Download PDF

Return to IJP Central Home Page