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Principles and structure of continuous-type inkjet printers

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

Circulation path

Circulation path

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.
  • 3Decompression valve
    Adjusts the ink pressure.
  • 4Piezo element
    Applies electro-magnetic pulses to the ink stream in order to separate the ink into particles.
  • 5Nozzle
    Discharges the ink.
  • 6Charging electrode plates
    Gives a negative electric charge to the ink particles formed from the ink column.
  • 7Charge sensor
    Monitors whether the ink particles have the proper charge.
  • 8Deflecting electrode plates
    Generate a magnetic field to deflect the ink particles according to their charge.
    This directs ink particles onto the print target.
  • 9Gutter
    Collects the ink particles not used in printing.
  • 10Pump
    Retrieves the ink particles from the gutter so they can collect in the main tank.
  • 1Main tank
    The ink collected here circulates again.
- Solvent tank
Feeds solvent into the main tank to control the ink viscosity when the ink in the main tank is too thick.
- Ink tank
Feeds ink into the main tank when it is empty or when the ink is too thin.

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