Samsung M262x Benutzerhandbuch (en)

Storing the toner cartridge
3. Maintenance
Estimated cartridge life
Estimated cartridge life the life of the toner cartridge (or imaging unit) yield 
depends on the amount of toner that print jobs require. The actual print yield 
may vary depending on the print density of the pages you print on, operating 
environment, percentage of image area, printing interval, media type and/or 
media size. For example, if you print a lot of graphics, the consumption of the 
toner is higher and you may need to change the cartridge more often.