The life of the print cartridge depends on usage patterns and the amount of toner that print jobs require. For example, when printing text at 5% coverage, a black HP print cartridge lasts an average of 5,000 pages. (A typical business letter is about 5% coverage.)
Cartridge life expectancy is reduced by frequently printing many 1- or 2-page jobs or jobs with heavy coverage. At any time, you can verify the life expectancy by checking the print-cartridge life. See Checking the print-cartridge life for more information.