Decalcomania
Surrealist technique of "automatic" output images. Ink or color spread on a piece of paper. Then, either is folded or is covered and is rubbed with another piece of paper in order the ink or paint to spread and form a random "image" (which can elaborate the artist). O. Dominguez was the one, who invented this technique, in 1936 and M. Ernst one of the artists, who used this technique repeatedly.