The Collaborative International Dictionary of English v.0.48:

Embosser \Em*boss"er\ (?; 115), n.
   One who embosses.
   [1913 Webster]

The Free On-line Dictionary of Computing (30 December 2018):

Braille printer
Braille embosser
embosser

    (Or "(Braille) embosser") A printer, necessarily
   an impact printer, that renders text as Braille.  Blind
   users call other printers ink printers.

   (1999-02-26)