A method of printing developed at the beginning of the twentieth century based on the stencil method of painting. In silk-screen printing, ink, paint or dye is brushed over a screen of silk or other fine-mesh fabric so that areas which have not been covered by a stencil are left blank. The masked off areas, or stencils, are made of paper or by painting an impervious lacquer on the screen itself. Separate stencils are made for each colour run. Today, the technique can incorporate sophisticated photographic methods and can be used to produce highly complex images. It also used by artists to reproduce their paintings or make works of art with more variations than mechanical processes such as lithography.