Monotypes are usually made by either painting or rolling inks onto a flat surface. This flat surface can be glass, Plexiglas, or sheet metal (etching plate). With the application of pressure the image will transfer onto the paper. Pressure can be the use of an etching or litho press, or any other means that will exert enough pressure to make the image transfer.
The ink used in a monotype can be applied with a brush, rag or rolled up with a roller or brayer. During the printing process depending on the method of application and the thickness and texture of the ink, the ink may spread and blur as it is blotted or absorbed by the paper. Usually the paper is placed on top of the plate used and the transferred image is a mirror image of the original. How the ink is applied and manipulated with all of its individual characteristics will be reflected in the print, which is what makes monotypes so unique.