Who Invented Carbon Paper?

The quite simple idea for making an exact copy (carbon copy) of what is being written on it a second sheet
Sheet underneath was invented by Ralph Wedgwood, of London, in 1806.
To make the first carbon paper, he soaked thin paper in ink, and then dried it out between sheets of blotting – paper. After that he placed the paper on which he wanted to write on top.
Placing, the dried ink in between did the rest.