Brother Multi Function MFC-8220 Brother Multi-function Printer?

MFC-8220 Brother Multi-function printer? - brother multi function

My mother bought the printer today. and came with a piece of blue ribbon on him. is not on the menu, scanners, etc.. I do not know that Blue Ribbon has something to do. The warranty is another piece of tape, but he believes that "guarantee". What is the blue ribbon? I'm afraid if I lose a guarantee. I delete it? Any help is very appriciated.