Cartridges have an advertised page yield. The cartridge manufacturer calculates it as the number of pages a cartridge can print, if the pages have 5% coverage. If your cartridge says the page yield is 2,000 pages, it may print that many, or it may print more, depending on how much toner your printer has to put on each page. If you print pages full of text or images, your cartridge probably won’t meet the advertised page yield. This isn’t a problem with the cartridge. Every cartridge gets the same amount of toner put in it. How long you can use it depends on how much toner you add to each page.