The original Brother LC-203
cartridge is made not to be refilled.
If you want to refill, you have to refill the LC-203 refillable cartridges
which are made to be refilled and are easy to refill as
You can purchase a set of Brother LC-203 refillable cartridges
LC-201 and LC-203 are
Printer ink and Refill kits for your Printer