Oh...it's really prints like a 2D printers!
See the color cartridge? It's just standard HP inkjet color cartridge! (I think they license their technology?)
And I think somehow the inks react with the powder so they forms solid.
But then it's not plastic right? I suspect the strength of those powder formed thing will be much less than ABS.
[
www.uprintsource.com] UPrint is also interesting, I think it prints like RepRap. I am not sure how they figure out the support though.