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 Stylus T22, Colour, 5760 x 1440 DPI, A4, 28 ppm Epson Stylus T22. Colour. Maximum resolution: 5760 x 1440 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 28 ppm