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 The Blue Angel is the ecolabel of the federal government of Germany since 1978. The Blue Angel sets high standards for environmentally friendly product design and has proven itself over the past 40 years as a reliable guide for a more sustainable consumption. Blue Angel Colour scan Colour scanning Laser technology Laser HP LaserJet 3050, Laser, Color scanning HP LaserJet 3050. Print technology: Laser. Maximum copy resolution: 600 x 600 DPI. Scanning: Color scanning, Optical scanning resolution: 600 x 600 DPI