HP 3500 HP Color LaserJet 3500 and 3700 Series Printers - User Guide - Page 224
Power consumption, Paper use, Plastics, HP LaserJet printing supplies
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Power consumption Power usage drops significantly while in PowerSave mode, which saves natural resources and saves money without affecting the high performance of this printer. This product qualifies for ENERGY STAR®, which is a voluntary program to encourage the development of energy-efficient office products. ENERGY STAR is a U.S. registered service mark of the U.S. Environmental Protection Agency. As an ENERGY STAR® partner, Hewlett-Packard Company has determined that this product meets ENERGY STAR® Guidelines for energy efficiency. For more information, see http://www.energystar.gov/. Paper use This product's optional, automatic, 2-sided printing feature (duplex printing) can reduce paper usage and the resulting demands on natural resources. See 2-sided (duplex) printing for more information. Plastics Plastic parts over 25 grams have markings according to international standards that enhance the ability to identify plastics for recycling purposes at the end of the product's life. HP LaserJet printing supplies In many countries/regions, this product's printing supplies (print cartridges, fuser, and transfer unit) can be returned to HP through the HP Printing Supplies Returns and Recycling Program. An easy-to-use and free takeback program is available in over 48 countries/regions. Multi-lingual program information and instructions are included in every new HP LaserJet print cartridge and supplies package. 212 Appendix D Regulatory information ENWW