ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR Epson AcuLaser CX11NF, Laser, Colour printing, Colour copying, Colour scanning, Colour faxing, A4 Epson AcuLaser CX11NF. Print technology: Laser, Printing: Colour printing, Print speed (colour, normal quality, A4/US Letter): 5 ppm. Copying: Colour copying. Scanning: Colour scanning, Optical scanning resolution: 600 x 600 DPI. Faxing: Colour faxing. Maximum ISO A-series paper size: A4