backprint

back +‎ print

backprint (plural backprints)

1. The mark or impression left by a person's back having been pressed against a surface.
   • Apr. 1997, "World Cup I", WaterSki, page 80:

     The season lasted about as long as it took McNeely to leave his backprint on the canvas.

2. Printing on the reverse side of a poster, postage stamp, or other printed material, usually for purposes of identification.
   • 1999, American Philatelic Research Library, Philatelic Literature Review - Volumes 48-49, page 180:

     Needless to say, the machine applying the backprint did not always function well and - there you go — there exist strips of five coil stamps without the backprint.

   • 2000, Eric King, The Collector's Guide to Psychedelic Rock Concert Posters, Postcards, and Handbills 1965-1973, Volume 1, page 637:

     The numbers in this column indicate which backprint appears on that card.

backprint (third-person singular simple present backprints, present participle backprinting, simple past and past participle backprinted)

1. (transitive) To print something onto the back of an object or document.