This new printer is going to give caffeine addicts a new quick fix. Struggling through the onset of a caffeine headache? Just eat that document you’ve just printed.

That’s right. This technology uses used coffee grounds as ink. That’s a printer that would be pretty sustainable in our household. Currently we put our coffee grounds in the garden. It’s a labour intensive printing process – but ink is pretty expensive and apparently bad for the environment. 

Found via Slashdot.