Brother HL-1260E - Manual (Page 172)

USER’S GUIDE
6–4
8. Bend the tab up and down several times until it is detached from the
toner cartridge.
9. Hold the tab firmly and pull it until the sealing tape comes out all the
way.
10. Insert the toner cartridge in the direction of the arrows engraved on the
cartridge into the side guides until it stops securely in the cartridge
holder inside the printer.
✒ Note
Push both sides of the toner cartridge gently until the cartridge is seated
correctly in place.
11. Close the top cover of the printer.