Overview HP Color Laser Jet Q3964A Imaging Drum for the HP Color Laser Jet 2550/2820aio/2840aio printer series has a typical life of up to 20, 000 black pages/5, 000 colour pages, based on 5% average coverage. Features HP Color Laser Jet 2550/2820/2840 Printing Supplies with Smart Printing Technology [1] provide affordable, high-quality colour every time. Highly uniform HP chemically-grown toner particles enable precise control & a wide range of colours. Enjoy low maintenance, trouble-free printing with HP Color Laser Jet 2550/2820/2840 Printing Supplies. HP Smart Printing Technology [1] enables easy, convenient cartridge replacement. HP Sure Supply [2] makes shopping & online ordering hassle-free.HP Color Laser Jet 2550/2820/2840 Printing Supplies with Smart Printing Technology [1] make automatic adjustments to optimise print quality & enhance reliability. Minimal user intervention saves your valuable time & improves productivity.