刻在石头上的字可以保留很久，后来，大约在4世纪，人们把一张纸铺在刷有油墨的刻字石板上来印刷。一些印刷工人由此想到，可将字刻在木板上来印刷。
Words engraved on stones could last very long , and later , in about the 4th century , the method of rubbing a piece of paper on an engraved stone coverd with ink was used to maked copies .
石板印刷