Specifications for imageCLASS LBP6780x Print Printing Method Black & White Laser Beam Printing Fixing Method On Demand Fixing Print Speed Mono: A4 / Letter 40 / 42ppm Duplex: A4 / Letter 20 / 20.5ppm (10 / 10.25spm; sheets/min.) Print Resolution 600 x 600dpi 1200 x 1200dpi (equivalent) 2400 (equivalent) × 600dpi First Printout Time (FPOT) 8.6 / 8.5 secs (A4 / Letter) Warm-Up Time