Q6511X HP Black Toner Cartridge is manufactured by Hewlett Packard (HP) and has a page yield of 12,000 pages based on 5% coverage. HP's advanced toner formulation provides extra sharp black text and smooth greyscales. HP Smart Printing Technology allows automatic adjustments ensuring consistent toner particle distribution through the life of the cartridge for best results. Easy to install and maintain with automatic alerts when the cartridge is low or out of toner.