Over at the Volokh Conspiracy Josh Blackman speculated that since this looks like a scan of a color print out, the fingerprints of the printer may have survived

Over at the Volokh Conspiracy Josh Blackman speculated that since this looks like a scan of a color print out, the fingerprints of the printer may have survived intact. Link here seems to be talking only about basic document properties, but some analysis of the page images themselves might be interesting.