HP's 920 Black Officejet Ink Cartridges are compatible with the HP Officejet 6500 printer series. Get laser-quality text, using HP Officejet inks. Print professional, plain paper documents that resist water and fading, using pigment ink designed for the office. Original HP inks are specially formulated to produce fast-drying documents, especially when you use papers with the ColorLok logo. The cartridge prints 420 pages.