There was a graphics arts shop process I think was called PMT (photo mechanical transfer?) where you contacted one sheet with another, and fed it though a roller processor type machine with some kind of wet solution on one of the rollers, that took one sheet's image and transferred it to the other without the need for an enlarger or contact/ light source.

There were papers that gave a positive from a positive, and more conventional papers that gave a negative from a positive. Some of them were not sensitized. Some were lith, some were continuous tone. I have not figured out what the chemical reaction was, but I am guessing physical development.

I have a pal that has a stash in his basement of this stuff, and an open invite to come over and play with it, but time to visit him has been short as of lately in my busy life.