Staples Inc. (NASDAQ: SPLS) announced today that it has collected 450 million ink and toner cartridges for recycling in the U.S. since 2005, averaging more than 60 million cartridges per year for the past four years. Through the cartridge recycling program, Staples has helped recover and recycle 234 million pounds of plastics and metals, diverting roughly the weight of 8,000 full garbage trucks from landfills.