Epson C3900DTN, Laser, Colour, 600 x 600 DPI, A4, 30 ppm, Duplex printing Epson C3900DTN. Print technology: Laser, Colour. Maximum duty cycle: 120000 pages per month. Maximum resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 30 ppm, Duplex printing. Network ready