Today, while i was working in the chem. lab, I accidentally spilled some silver nitrate on a piece of paper (argh). I set it aside, forgetting that it was sensitive to light. About an hour later, I noticed that it had darkened significantly under the fluorescent lights.
That got me wondering; would it be possible to produce images on paper coated with only silver nitrate? I know it would be incredibly slow, but is there any reason why it wouldn't work?