Need help repairing a hp9120 printer

[dramsey]

FWIW the printer was not designed to use the metallized paper you might suppose it would, and aluminum oxide ash can build up on the printhead. Since you'll only be using it for demo purposes, it's probably not that big a deal, since the original chemically-treated paper was (AFAIK) unique to that printer anyway, and wholly unobtainable now.

EDIT: Hm. That does look like the correct paper, though.