Hello and thank you for choosing JA for your support needs. Sorry for the issue.
Well I will be as straight as possible as folks from your part of the world respect that.
So, you will need to buy a new printhead for your printer.
The cost of the Printhead is $25 and up on Amazon and Ebay. Next, you have the option to contact Brother in AU which can be reached at:
Brother International (Aust) Pty Ltd - Head Office
Suite 1, Level 3, Building A,*****br />Macquarie Park NSW 2113Phone: 02 9887 4344
Brother Product Support Centre for Technical Support
Suite 1, Level 3, Building A,*****br />Macquarie Park NSW 2113Phone: 02 8875 6000Local Phone Support
Chime in and let me know of your thoughts.