Buy a full set of Original HP Colour Laserjet print cartridges & receive £110 Cashback (Q2670A/Q2681A/Q2682A/Q2683A) Buy this product today along with Q2670A/Q2681A/Q2682A & receive £110 Cashback. This offer is valid until 31st August 2013 For full details of how to claim this offer, please visit HP Promotional Website Overview HP 311 Laser Jet Printing Supplies work with the printer to make high-quality colour printing easy, cost-effective & reliable. An enhanced electro-photographic process achieves a broad range of vibrant colours & sharp text on a variety of papers. Features HP 311 Laser Jet Printing Supplies & the printer use an enhanced electro-photographic process to maintain accurate colour even in extreme conditions. Advanced toner formulas deliver a range of vibrant colours & sharp text.HP 311 Laser Jet Printing Supplies are easy to install & maintain. HP Smart Printing Technology[1] in HP print cartridges & your printer notifies you when to replace a print cartridge & tells you exactly which part you need.HP 311 Laser Jet Printing Supplies with Smart Printing Technology[1] make automatic adjustments to optimise print quality & enhance reliability. Minimal user intervention saves your valuable time & improves productivity.