platen

noun4

1. •
   The part of a printing press which presses the paper against the type and by which the impression is made.

   • And the form is inked, the paper is applied, the bed is slid, and the platen is levered down and the proof is printed. — 2010
2. •
   The part of a typewriter or printer on which the paper rests to receive an impression.
3. •
   The movable table of a planer or other machine tool, on which the work is fastened, and presented to the action of the tool.
4. •
   The flat glass surface of a scanner or photocopier on which operators place items to be scanned.