Mosaic printing head

摘要

In a mosaic printing head for applying lettering by means of needles which are ejected as the head is passed over a sheet of paper, the needles are accommodated in a tubular column of bearing metal. Near one end, the tube is formed with a transverse wall containing a circular arrangement of guide holes for the needles, each guide hole being slightly inclined towards the tube axis. The operative ends of the needles are arranged in a row and parallel to one another with the aid of an orifice member provided for the tube.