Nothing really new. I've seen a company in Germany that already has quite some knowledge about silver ink, and if you just search google you'll find a few more small and large manufacturers for conductive silver ink.
Seems like this Ink-Jet technology (in a new reprap toolhead?!) is the key to get our bots to actually reproduce circuit boards with a good surface coplanarity and high enough resolution to accept todays fine pitch SMD components. Every other experiment with extruding/depositing some kind of conductive glue/polymer just does not seem to have what it takes to get a good result out of it. But, to be honest, i have no idea how expensive this ink will be. Guess for now, it's more expensive to buy the ink for one board than ordering a hand full of boards from a professional pcb manufacturer... But if commercial applications start to pick up, the price should go down on this ink and it might be worth hacking some ink jets for the reprap project.
Examples for the ink? There you go:
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www.anapro.com]
