The only other terminal I worked
with that could do that was a Tektronix storage scope terminal (4010
or 4014, IIRC). The Tek printer wasn't built-in, but it did take a
scan of the live screen, so that was similar. The paper was
silver-grey and I remember it coming out wet too. Everything else I
worked with was either thermal or dot-matrix impact, and could only
capture text as it arrived at the terminal, not a screen image.
The tektronix printer (or 'copier' as they called it) was photographic. The
paper was light-sensitive, and went past the screen of a 'flat' CRT (I think
it only had deflection plates for one axis, the 'deflection' in the other
direction coming from the paper movement). It really was an odd-looking
tube.
IIRC the image was developed by heating the paper. I don't remember any
liquids involved, but it's been a long time since I looked at the manual for one
and even longer since I've seen the actual device
-tony