19世纪初,英国人韦奇伍德在伦敦经营着一家文具店。为了吸引老顾客,他经常给他们写信,介绍店里新进的文具。这些信的内容都一样,但是他要机械地写很多遍,一天下来,手臂都酸了,整个人觉得很烦躁。一天,他看着一张纸上留下的前一张纸的字痕,心想:要是发明一种纸,能把这些字痕涂上颜色,不就可以同时写成两封信甚至更多封信吗?于是,他开始着手研究。 In the early 19th century, Englishman Wedgwood ran a stationery shop in London. In order to attract old customers, he often wrote to them to introduce new stationery in the store. The content of these letters are the same, but he has to write many times mechanically. One day, his arms are sore, and the whole person feels very upset. One day he looked at the mark of the previous piece of paper left on a piece of paper and thought: If we were to invent a paper that could be colored with these letters, we could write two letters at the same time or even more So, he started to study.