tractor feed

from The Free On-line Dictionary of Computing (8 July 2008)

sprocket feed
pin feed
tractor feed

   <printer> (Or "tractor feed", "pin feed") A method some
   {printers} use to move paper by rotating wheels with pins or
   studs (tractors) that engage holes along the sides of the
   (usually fanfold) paper.  A sprocket feed printer does not
   slip unless the paper jams, but cannot feed standard typing
   paper or work with a {sheet feeder} like {friction feed}.

   Some paper for sprocket feed printers has the edge strips with
   the holes in detachable from the rest of the paper.  These
   strips are known as {chad} (and other names).

   (1997-06-29)