Brother HL-1260 Service Manual page 240

USER'S GUIDE
2–2
Toner Cartridge
The toner cartridge is inside the toner cartridge carton.
!
Caution
The toner cartridge is packed inside a bag. Do not open it now. Open it
immediately before you install the toner cartridge. The toner cartridge must
not be exposed to light for a long time.
Fig. 2-2 Toner Cartridge