C6578DN Includes a new printhead to automatically tune up the print quality with every cartridge replacement. Specially formulated dye-based inks for output that is always clear and sharp. Photo-quality color and impressive graphics with every printout. Patented, dye-based color HP ink formulations for clear, vivid images every time you print. Simple to install and easy to replace for low maintenance, trouble-free printing. Precisely designed and engineered to save time and increase productivity.