Hewlett-Packard Development Co. L.P. (HP) has expanded its recycling options and its line of sustainably-sourced paper.

The Palo Alto, Calif.-based office products company said in a news release it has added Overland Park, Kan.-based Office Depot as retail recycling partner. Office Depot will participate in HP’s cartridge return and recycling program, HP Planet Partners, offering HP ink recycling in more than 1,100 stores across the United States.

HP also has collaborated with Office Max, Staples and Walmart to expand its cartridge collection network, which it expects to include more than 9,000 retail outlets worldwide. Through Planet Partners HP has recycled more than half a billion HP ink and LaserJet toner cartridges. The company hopes to recycle 3.5 billion pounds of electronic products and supplies by the end of 2015.

HP also said its everyday paper line in North America is now certified by the Forest Stewardship Council (FSC), making HP one of the first major office paper manufacturers to offer a full line of papers that is FSC certified. More than 40 percent of HP’s total tonnage worldwide is now FSC-certified and/or contains at least 30 percent post-consumer waste. HP’s goal is that 50 percent or more of HP-branded paper will be FSC-certified or have at least 30 percent post-consumer waste content by the end of 2015.