platen
noun
plat·en ˈpla-tᵊn 
1
: a flat plate
especially : one that exerts or receives pressure (as in a printing press)
2
: the roller of a typewriter or printer
Example Sentences
Recent Examples on the Web Can anyone argue the clackety-clack-clack of a metal typebar hammering against the platen on a typewriter has a symphonic quality that a computer keyboard never will? 
Carlos Monarrez, Detroit Free Press, 28 Oct. 2019 The ceramic substrate, called a platen, will then be glued on with a thermally conductive adhesive. David Grossman, Popular Mechanics, 27 June 2017
Carlos Monarrez, Detroit Free Press, 28 Oct. 2019 The ceramic substrate, called a platen, will then be glued on with a thermally conductive adhesive. David Grossman, Popular Mechanics, 27 June 2017 Word History
Etymology
Middle English plateine thin metal plate, from Anglo-French, from plate
First Known Use
1541, in the meaning defined at sense 1
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