Refill Instructions for Brother LC-123 LC-125 LC-127 Cartridges
On the back side of the cartridge two holes on each part of the cover. That is where the retaining collars of the ink chamber inside click in place.
Removing the front cover above the ink outlet and air valve by using a small screwdriver. Carefully push in the 2 retaining collars and then push them rightwards as the first two pictures show. Afterwards, carefully remove the cover from the ink chamber.
On the back cover the retaining collars are more difficult to reach. Please proceed particularly careful. Push the retaining collars in and then leftwards as the first two pictures show. Then easily pull the ink chamber out of the cover.
2 options to refill Brother cartridges
Option 1 it is sufficient to remove only the front cover above the ink outlet and air valve. Drill the hole into the upper left corner next to the air valve. Filling in the recommended amount of ink through this hole. Reseal the opening with a sealing plug or hot glue. Press the front cover onto the ink chamber until the retaining collars click into place. The sealing plug is pressed firmly onto the ink chamber by the cover and therefore seals the opening securely.
Option 2 remove both covers from the ink chamber. Filling in the recommended amount of ink into the ink chamber. Be careful not to damage the side foils with needle or syringe while refilling. Reseal the filler opening with a sealing plug or hot glue. Put the back cover onto the ink chamber and press until the retaining collars click into place. It is enough place available between ink chamber and cover for a plug that fits plain onto the chamber. The sloping back of the cover presses the plug firmly into place and seals the opening securely. At last attach the front cover onto the ink chamber and push until the retaining collars click into place.