An encaustic monotype is a single unique print. No printing press is involved. The process involves applying pigmented wax to a heated palette surface. The paper is laid onto the palette, the warm wax is picked up by the paper. Some pieces involve multiple lifts and some have additional work on the surface of the print either with encaustic wax or India ink.
If you are interested in learning about encaustic monotype process you can read the posts on my blog All Things Encaustic.