The first high-quality color printing process that became popular in the second half of the 19th Century. The lithographer Gottfried Engelmann (1788-1839) was the inventor of this method. From 1816 onwards, he worked with a second color in addition to black. Like other printing processes, chromolithography also required a separate pass for each color, at first using a separate stone plate for each color tone of an image. Using this method, prints were produced using more than 20 plates. The method characteristic of all subsequent color printing processes whereby primary colors were printed together to create different color tones was first used by the French lithographer and printer Jules Ch?ret (1836 – 1932), who is famous for his posters.