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 Color ink technology Y HP Deskjet 845c Printer, Colour, 600 x 600 DPI, 2, A4, 4.7 ppm HP Deskjet 845c Printer. Colour, Number of print cartridges: 2. Maximum resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 4.7 ppm