Remanufactured Ink Cartridge Replacement for HP 940XL Black (C4906A) for HP OfficeJet Pro Series Printer HP 940BX ink tank contains 80ml, yields up to 2200 pages per cartridge @ 5% coverage. Compatible Printers: Officejet Pro 8000, Officejet Pro 8500A, Officejet Pro 8500 Premier, Officejet Pro 8000 Enterprise, Officejet Pro 8500, Officejet Pro 8500A Plus, Officejet Pro 8500 Wireless, Officejet Pro 8000 Wireless, Officejet Pro 8500A Premium. Print effect: Make printing more smooth, natural looking images and fewer granularities, producing best looking prints ever. Inks will stop coming out automatically when printing is over. Technology: SPEED ink cartridges are adopted the advanced Print Head Cleaning Technology, Print Head Testing Machine Technology, Eco Friendly Technology, Zero-Carbon Technology. The cartridges underwent a complicated process includes cleaning, testing the chip, ink vacuum refilling,etc. Totally 27 production lines. All cartridges reach the standard when they are tested in any severe environment. Warranty: CE, TUV, ROHS, ISO9001, ISO4001 International Quality Certified.