3. Open the cartridge using  a screwdriver.(ref. Pic 2)

    You can easily open it with a screwdriver as it is glued only along the joins.

    No need to take the cartridge out  from the cover.(ref Pic 2B)

4. You will need to make two holes in the top of the plastic film.

The first hole (Ref. Pic 3) is for inserting ink and the second hole is to release the air.

You can first make a hole in the plastic film with a pin (although not necessary) to make it easier to insert the needle of the refill bottle (using caution to not pierce the other side of the plastic film). 

Next, make an air hole on the left. (ref Pic. 4) 

5. Refill ink in the first hole. (Ref. Pic 5) Making sure the cartridge is upright position and the ink must be filled to no more than two third of the way. (ref. Pic. 6B). 

    As air will escape from a cartridge while refilling, make sure the hole is positioned higher than filling hole. 

6. Seal the two holes with ordinary scotch tape (ref Pic. 6). Making sure the holes are properly covered. 

    Be sure to clean & dry the film on the cartridge before applying the tape. (ref Pic. 6B)

    Both holes are taped.      

7. Put the cover back. (it is optional to hold the cover on with tape.) 

   Now it is ready to use.

Instead of going through this procedure, We sell compatible replacement cartridges, we call BIG TANK which hold much more ink volume and specifically designed for endless refill. 

The ink volume of our compatible BIG TANK cartridges are 30ml for color & 40 ml for black compare to the original cartridges which are 7.5ml  for color & 21ml for black.