Monotype refers to the technique in which a single print is created by painting with inks onto a non-absorbent surface such as zinc, copper, or Plexiglas. The surface is smooth and is never cut or scratched. After printing, the surface can be cleaned and a new, unique image can be created on the same plate. Monotypes can be printed either by hand-rubbing the print with a barren or the back of a spoon, or by running the print through an etching press.

Usually, only one print is made with this process. Sometimes, however, a second print can be pulled from the residual ink left on the plate after the first print. The resulting image is fainter and has an ephemeral quality. It is appropriately termed a "ghost image." Collage elements can also be incorporated into the print through a process called chine collé, further adding to the unique qualities of this method of printing.