Print rich and striking texts with the HP 645A Black LaserJet TonerCartridge - C9730A. With a yield of 13,000 pages, it is an economicalchoice to hand high-volume printing. This LaserJet toner cartridgeautomatically adjusts the settings to produce professional-qualityprints. The HP Smart printing technology alerts you in advance aboutlow ink levels. This printer toner cartridge is easy to install andmaintain.