Yep, it was an experiment using regular Ink Jet printers.
The ink cartridge was filled with some kind of reproduced cell, and laid on some kind of gel that promoted growth. The printer would lay down a layer of cells, then another , then another, untill a 3D copy of the organ was there. Of course there is still rejection problems and the like.
I'll try to find the story, as It's been way to long for me to remember everything about it.
Stephen