Answer: The basic machine was invented by Thomas Alva Edison and patented in the United States in 1876, Stencil-Pens. It was originally intended to be used as an engraving device, but in 1891, Samuel O'Reilly discovered that Edison's machine could be modified and used to introduce ink into the skin, and later patented a tube and needle system to provide an ink reservoir.
Next Question: Who is known for the Creation / Invention of Modern Bikini?
Previous Question: Who created the the Smallest Tattoo of a Painting?