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 Canon BJ S820D PHOTO 4PPM (NMS), Color, 4, 2400 x 1200 DPI, 4 ppm Canon BJ S820D PHOTO 4PPM (NMS). Color, Number of print cartridges: 4. Maximum resolution: 2400 x 1200 DPI, Print speed (black, normal quality, A4/US Letter): 4 ppm http://www.webuser.co.uk/products/hardware-reviews/printers/21040/1/canon-s820d more..