Full duplexing functionality offers two-sided copying, scanning & faxing of originals as well as double-sided printing, 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 for fast warm up & quick first prints. PC-fax function lets you fax documents directly from your PC, reducing paper & printer usage. Toner save mode decreases consumable usage. High-quality color scanner is ideal for archiving business documents. Machine Functions: Copy; Fax; Print; Scan; Printer Type: Laser; Maximum Print Speed (Black): 23 ppm; Network Ready: No.