Compact size strong security two-sided printing 50-sheet adf energy efficient print, copy, scan, fax up to 27 ppm black and 27 ppm colour up to 600 x 600 dpi hp’s entry-level enterprise-class color mfp with speeds up to 28 ppm 9 and strongest security. 1 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 print technology laser printing colour printing duplex printing yes duplex printing mode auto maximum resolution 600 x 600 dpi print resolution colour 600 x 600 dpi print resolution black 600 x 600 dpi print speed black, normal quality, a4 us letter 27 ppm print speed colour, normal quality, a4 us letter 27 ppm warm-up time 170 s time to first page black, normal 9.5 S time to first page colour, normal 11 s n-in-1 print function yes watermark printing yes secure printing yes copying copying colour copying duplex copying yes duplex copying mode auto maximum copy resolution 600 x 600 dpi copy speed black, normal quality, a4 27 cpm copy speed colour, normal quality, a4 27 cpm time to first copy black, normal 9.6 S time to first copy ...