platen

noun

1. 1

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

2. 2

   The part of a typewriter or printer on which the paper rests to receive an impression.

3. 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. 4

   The flat glass surface of a scanner or photocopier on which operators place items to be scanned.