Epson AcuLaser MX20DNF, Laser, Mono printing, 1200 x 1200 DPI, Mono scanning, Mono faxing, A4 Epson AcuLaser MX20DNF. Print technology: Laser, Printing: Mono printing, Maximum resolution: 1200 x 1200 DPI. Scanning: Mono scanning, Optical scanning resolution: 600 x 600 DPI. Faxing: Mono faxing. Maximum ISO A-series paper size: A4