Coffee Based Printing – EcoInk
A machine that saves oil and emissions of inkjet printers created by Jeon Hwan Ju. This RITI Coffee Printer uses coffee grounds and tea residue to create an eco-friendly and sustainable source of ink! Leftover coffee grounds and tea is placed into an ink cartridge to start the process. After that, your printer will be filled with viable ink.
Source: inhabitat – riti coffee printer
Related topic: coffee based 3D printing