The Sisyphus Comments

Extender Printer Toner Cartridge Life

Many printers just stop printing when the toner cartridge reaches a certain point, even though toner is still present.

Try this trick before you ditch your old cartridge. On the toner cartridge, there are two small windows on each side where the printer can look inside and gauge the toner level. Place a piece of black electrical tape over the windows. The printer will read the toner level as full and you can get a little more life out of the cartridge.