In 1440, German inventor Johannes Gutenberg invented a printing press process that, with refinements and increased mechanization, remained the principal means of printing until the late 20th century. The inventor's method of printing from movable type, including the use of metal molds and alloys, a special press, and oil-based inks, allowed for the first time the mass production of printed books.
But Milestones in printing is as under:
888 The Diamond Sutra, a Buddhist scripture, was the first dated example of block printing.
1041 Bi Sheng in China invented movable clay type
1423 Europeans use xylography (art of engraving on wood, block printing) to produce books.
1430 Gutenberg moved from his native town of Mainz to Strasburg
1436 Gutenberg begins work on his printing press.
1437 Gutenberg was sued for "breach of promise of marriage" by a young lady of Strasburg
1440 Gutenberg completed his wooden press which used movable metal type.