This is a replacement cartridge for the Hewlett Packard C9730A (645A) black laser toner cartridge which is manufactured by LD and is guaranteed to perform with your HP printer. LD remanufactured replacement C9730A laser toner cartridges are specially engineered to meet the highest standards of quality and reliability you can expect from LD. Our toners have exceptional yields that meet or exceed the OEM (Original Equipment Manufacturer) page yield for the C9730A. Our remanufactured HP 645A contains up to 85% new parts including wiper blades, OPC drums, an electronic smart chip for accurate toner level readout and other internal components. The use of LD remanufactured replacement laser toner cartridges and supplies does not void your printer's warranty. LD remanufactured laser cartridges are not remanufactured by HP. 4inkjets offers a 100% Quality Satisfaction Guarantee on our LD remanufactured C9730A black laser toner cartridges.