Green printer uses coffee dregs as ink

The paperless office is a great notion, but in reality there are still many scenarios where the printer needs to be switched on and fed with environmentally unfriendly consumables - paper and ink. Recycling and re-using paper for print jobs has become well entrenched, but the expensive and often frustrating process of replenishing the ink remains an issue for many of us. Which brings us to one of the cleverest recycling ideas to emerge from this year's Greener Gadgets competition - the RITI printer. This design concept by Jeon Hwan Ju takes your coffee or tea dregs, plus a little elbow grease, and turns them into an eco-friendly alternative to conventional ink.

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