The printing press becomes a practical invention only once:
1) You have something to print on
2) You have content worth printing
The introduction of paper to Europe and the Latin translations in Toledo and Sicily (cities in former Islamic territories) are the answer to 1 and 2.
Paper is cheap, scalable, durable and portable. Pre-paper technology such as papyrus, parchments, tablets and carvings have issues in those regards.
Greek literature from Archimedes, Aristotle, Apollonius, Euclid, Diocles, Galen, Hippocrates, Ptolomy, and many others, was reintroduced to the West through those translations.
