What was the key innovation in Gutenberg's printing press?
Use of oil-based ink
Use of water-based ink
Use of charcoal-based ink
Use of vegetable-based ink
Answer
Gutenberg's key innovation was the use of oil-based ink in his printing press. This type of ink was more durable and allowed for clearer, more precise printing, which was crucial for the mass production of texts.
The Gutenberg Genius: Test Your Knowledge on the Father of Printing