Romans make ink from wine

Gutenberg's printing press was largely based on a Roman screw-press used for winemaking. Goldsmiths in those days were exceptionally capable and metal based (or maybe ceramic-based?) movable type could be developed soon after. What changes might evolve from a Roman printing press with movable type appearing circa 200 AD if enough customers were found to make its use commercially viable?
 
Well, it would certainly make a difference, but one key missing ingredient here is the invention of paper. Papyrus just isn't a viable alternative to my knowledge and Vellum is too expensive. To get the most out of it someone would have to either get paper introduced from China (not a terribly impossible thing to accomplish, that is where the Eastern Empire got silk from reportedly) Or alternatively someone would have to invent it or some equivalent to it independently of China. This isn't completely impossible, just very unlikely.

All that said though, get the printing press and paper to the Romans and it would certainly be a massive help in communication and help lighten the sheer administrative weight of the Empire. Certainly the resulting increase in literacy and easier access to educational texts. Really all the benefits we saw with the OTL invention of the printing press would change the course of history here considerably. Even if it doesn't save the Empire in the West we would at the very least have more surviving works of literature thanks to potentially thousands of copies of books that otherwise might have only had a handful of copies ever. Hell, it might even spark a little economic boom, which would pay dividends later on as education becomes more widespread and accessible.
 
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