HP ink jet printers and multifunction printers (MFPs) that use Type 15 or Type 45 black ink jet cartridges require only two cartridges – one black and one tri-color (cyan, magenta and yellow). These printers and MFPs may also use Types 23, 41 or 78 tri-color cartridges, depending where the printers are purchased. All cartridges require a chip for correct printer operation and are color and yield-specific. Please refer to the Chip Center for the correct chip for your cartridge SKU and region.