Note the following points when replacing the toner cartridges.
Do not refill the toner cartridge. Normal printing may not be possible.
If toner gets on your skin or clothes, wash it off with soap and water immediately.
Although the toner is harmless to humans, it can be difficult to remove if it is left on your skin or clothes.
After moving the toner cartridges from a cool to a warm environment, leave it unopened to warm up at room temperature for at least one hour before using it.