From The Collaborative International Dictionary of English v.0.48:
Printer \Print"er\, n.
One who prints; especially, one who prints books, newspapers,
engravings, etc., a compositor; a typesetter; a pressman.
[1913 Webster]
Printer's devil, Printer's gauge. See under Devil, and
Gauge.
Printer's ink. See Printing ink, below.
[1913 Webster]