The Wake Forest Institute for Regenerative Medicine has developed a skin printer.
The main difference is that instead of ink, the skin printer will have two heads that propel a combination of skin cells, collagen, and blood coagulants onto the wound. The two compounds form skin once they are mixed together at the print head, in much the same way epoxy glues harden when the two parts are mixed together.I'm familiar with various kinds of 3D modeling printers, but this technology is pretty awesome. It has the potential to revolutionize the treatment of burns and other skin traumas.
Living in the future is awesome.