is a type of printmaking made by drawing or painting on a smooth, non-absorbent surface. The surface, or matrix, was historically a copper etching plate, but in contemporary work it can vary from zinc or glass to acrylic glass. The image is then transferred onto a sheet of paper by pressing the two together, usually using a printing-press. Monotypes can also be created by inking an entire surface and then, using brushes or rags, removing ink to create a subtractive image, e.g. creating lights from a field of opaque color. The inks used may be oil based or water based. With oil based inks, the paper may be dry, in which case the image has more contrast, or the paper may be damp, in which case the image has a 10 percent greater range of tones..
is a type of screen-printing in which the artwork is painted directly onto a 160 mesh silkscreen and by using a squeegee the image is transferred through the screen onto paper. The process typically requires some preliminary planning and drawing, however once ink is applied onto the screen, the artist has only 15 minutes to complete the painting. The urgency contributes to some spontaneity that leads to amazing results.