The HP 78 Tri-color Inkjet Print Cartridge guarantees outstanding plain-paper image quality, photo-image quality on special media, and the best combination of speed and print quality in any print mode.The HP 78 Tri-color Inkjet Print Cartridge also includes a new printhead to automatically tune up the print quality with every cartridge replacement.Through a carefully crafted combination of ink chemistry, nozzle count, drop size, and firing frequency, the cartridge delivers unsurpassed HP print quality at top speed.