Modular print head

A print head for use in a dot matrix printer comprising support members, a plurality of individual non-magnetic frames having opposite faces one of which carries a projecting part and having mounting holes through which said support members extend, said frames being stacked on said support members with one face of one adjacent frame engaging the projecting part of the other adjacent frame, each of said frames having an aperture therethrough between said opposite faces thereof within which a magnet is mounted so as to be exposed at said opposite faces, said magnets in said plurality of frames being similarly magnetically oriented when said frames are stacked on said support members, said projecting parts defining frame portions thicker than the depth of said apertures, thereby to produce spaces between the magnets of adjacent frames when said frames are stacked in engagement with adjacent frames, hammers comprising coils movably received in said spaces, said hammers further comprising print means movable with said coils and freely movably extending from said frames to points beyond said frames, and means for making electrical connection with said coils.