Epson CX6400, Colour printing, Colour copying, Colour scanning, A4 Epson CX6400. Printing: Colour printing, Print speed (colour, normal quality, A4/US Letter): 11 ppm. Copying: Colour copying. Scanning: Colour scanning, Optical scanning resolution: 1200 x 2400 DPI. Maximum ISO A-series paper size: A4 Epsons CX6400 multifunction printer delivers office features and tools at an attractively low price.