Incorporates full network connectivity for all printer functions, providing an ideal multifunction solution for busy workgroups. Full duplexing functionality offers two-sided copying & faxing of originals as well as double-sided output, saving time & reducing paper waste. Single cartridge system reduces downtime by requiring just one user-replaceable consumable. On-Demand SURF (Surface Rapid Fixing) technology uses a linear ceramic heater that heats instantly for fast warm up speeds & quick first prints. PC-fax function lets you fax documents directly from your PC, reducing paper & printer usage. Toner save mode decreases consumable usage. Machine Functions: Copy; Fax; Print; Scan; Printer Type: Laser; Maximum Print Speed (Black): 23 ppm; Network Ready: Yes.