solid-ink coding machine is a kind of special label printing equipment, and suitable for printing labels on the surface of paper, nonferrous plastic film and aluminum foil. It adopts cantilever type mechanism, light and precise. Its lengthways-printing position is controlled by electronic device, and can be adjusted discretionarily. Moreover, it uses advice, and solid ink roller for printing, which has six colors for choice, black, red, yellow, blue, white and green. The printed words is clear and not easy to erase and change.