This HP 59A Black Toner Cartridge is ideal for workgroups who want to print consistent, quality black-and-white pages at high speeds, help save energy, and protect against fraud. It has been precisely created to deliver quality and reliable printing results. This is done by working harmoniously with HP Paper and your HP Printer. Over 50 Percent of the printing technology of your HP Printer is contained within the cartridge itself; meaning every time you replace your toner cartridge you are installing a brand new print engine.