If you have a printer or Brother MFP, and you do not want to buy a new cartridges every time, then there is a special refillable cartridges, with the high volume (the black cartridge is for 85ml., color cartridges for 60ml.), which you can easily refill and install into the printer or MFP. For the filling you need only the ink and in order to install the mount for the opening and closing sensor of the cover, which should be included.

Take a refillable cartridge and pour the ink into the filling hole (Figure 1), the air hole should be closed.

You can refill be using the syringe with a needle. You may fill a full cartridge or can underfill for a little. Plugging the air hole with a rubber crock. You can put into it the filter can  left open.

Picture 1.

Remove the cover of the printer, for this you need to pry off the fastening and take out the guides  (Figure 2).

Figure 2.

Insert the refillable cartridges into the printer until it engages. Next you need to press and fix the sensor of opening and closing the cover. Insert the fixture into the hole for guide path of the cover (Figure 3).

Figure 3.

Push into the printer by clicking on the sensor (Figure 4).

Figure 4.

Now we need to fix the mount, insert the stopper next to the mount (Figure 5).

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Figure 5.

Push into the printer (Figure 6).

Figure 6.

As a result, you should have as shown in Figure 7.

Figure 7.

Once you have pressed and fixed the sensor of the opening and closing the cover, the printer will end the procedure of cartridge replacement and after cleaning becomes ready.