偶然的故事李成月蜡笔字引发的思索１７９６年，捷克剧作家沙纳菲尔德把母亲的洗衣单据用蜡笔抄在石灰石上，后来不慎将水泼在石上，却发现用蜡笔写过的地方，并没有沾湿。于是他继续研究，１８０１年取得平版印刷的专利，这是印刷史上重要的里程碑。火柴是这样“擦”出来... Accidental story Li Chengyue Crayon-inspired reflection In 1796, the Czech dramatist Shane Field cedar mother's laundry slip copied on limestone, and later accidentally splashed water on the stone, but found the place written in crayons and did not Wet. So he went on to study and obtained a lithographic patent in 1801, an important milestone in printing history. The match is “rubbed” out ...