Okidata ML690 (24-Pin), 120V, (E/F/P/S)ML690 691 24 pin dot matrix printers create multi part forms and other customer facing documents at super fast print speeds. Versatile paper handling and long life ribbons maximize performance and minimize running costs. Competently managing heavy media, ML690 691 maximize productivity and deliver a wide range of professional business and commercial documents. Okidata Printers Dot Matrix