How to fill a printer cartridge with invisible ink

A simple video guide to filling an inkjet printer with invisible ink! This is great for fun stuff like April fools day pranks or even for more serious stuff like improving your security for printed documents.

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Video Transcript

Invisible Printer Ink

You need:

Empty inkjet printer cartridge and 4 invisible ink pens with UV light

First,prepare your cartridge to receive the invisible ink

  • Take off the cap of the cartridge
  • Take off the plastic lid over the sponge
  • Gently extract the sponge
  • Wash the sponge with warm water until the water flows clear
  • Wash the inside of the cartridge until it's very clean
  • Gently replace the clean sponge inside the cartridge

Now it's time to make invisible ink inkjetprinter

  • Remove all the ink in the 4 invisible ink pens
  • Suck all the ink with a syringe
  • Put the ink into the clean sponge
  • Close the cap of the new invisible ink cartridge and replace in the printer.

You can print all you want with yellow only (because now it's the invisible ink).  For me, I scan all my precious documents and reprint with invisible ink:

  • Scan
  • Change the black text to yellow
  • Print

Your precious document is invisible.  Just take UV light to reveal