wiki上面寫的清清楚楚：
http://en.wikipedia.org/wiki/Printing
The movable type printer was first invented by Bi Sheng in 1041 during Song Dynasty China. In a memorial to the throne in 1023, Northern Song Dynasty China, it recorded that the central government at that time used copperplate to print the paper money also the movable copper-block to print the numbers and characters on the money, nowadays we can find these shadows from the Song paper money. Later in the Jin Dynasty, people used the same but more developed technique to print paper money and formal official documents, the typical example of this kind of movable copper-block printing is a printed "check" of Jin Dynasty in the year of 1215. The world's first movable typ...