The printing press was a big improved on the old wooden blocks used for printing. The idea was unique (remarkable). The mirror image of each letter, number or symbol was cut into a small block so it could be recreated easily. Each precast image was easily movable and could be arranged into any order, coated in oil-based ink and lowered onto paper with a screw press. Using his printing press, Gutenberg printed the Gutenberg Bible, which was one of the first books to be printed from a press. Gutenberg's invention led to the Printing Revolution, in which books became less expensive and much easier to create, meaning libraries grew and information was more widespread.