It is possible that certain technical errors on your Brother Printer may prevent you from printing black color. You can refer to the steps listed below to solve the Brother Printer not printing black issue:
• Check if the “Breather Tape” is removed before installing the ink cartridge
• Be sure to install a new Brother Printer cartridge before the ink runs dry
• As far as possible use only genuine Brother Printer ink cartridges
• Keep the printer in a cool place preferably away from the window
If you find that your printer still does not print black even after implementing the solutions above, you can call the Brother Printer tech support number and ask for additional technical assistance.