They’re built out of old CD-ROM drives, recycled ink cartridges and a open source Arduino boards. So far I think they just print bacteria? From the InkJetBioPrinter page:
We’ve disassembled an abandoned HP 5150 inkjet printer for use as a bioprinter. So far, we’ve pried open some ink cartridges, filles the black cartridge with arabinose, printed the BioCurious logo on filter paper, put the paper on a lawn of pGLO E. coli, and watched our logo light up in GFP!
Check out some pics on our Flickr group here: http://www.flickr.com/groups/bioprinter
Next, we want to start printing live cells, starting with E. coli. We’ll probably print the cells on a sheet of filter material and put it onto an agar plate, or pour a thin, dense layer of agar on a support material, and feed that into the printer directly. We’ll see…
(via H+ Magazine)