Print speed up to 20 ppm (black) and 20 ppm (colour) Up to 600 x 600 dpi Dynamic security enabled printer Certain HP printers are intended to work only with cartridges that have a new or reused HP chip or electronic circuitry. These printers use dynamic security measures to block cartridges using a non-HP chip or electronic circuitry. Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. Reused HP chips and electronic circuitry enable the use of reused, remanufactured, and refilled cartridges. Printing Time to first page (colour, normal) 17 s Time to first page (black, normal) 16 s Print speed (black, normal quality, A3) 10 ppm Print speed (colour, normal quality, A3) 10 ppm Print speed (colour, normal quality, A4/US Letter) 20 ppm Print speed (black, normal quality, A4/US Letter) 20 ppm Print resolution black 600 x 600 DPI Print resolution colour 600 x 600 DPI Maximum resolution 600 x 600 DPI Duplex printing mode Manua