An application device coating only a non-treated surface of a coating object, which comprises a treated surface subjected to a surface treatment and the non-treated surface not subjected to the surface treatment, with a heat-fusible coating material that is a solid at room temperature and is liquefied by heating, the application device comprising:
- an inkjet unit for discharging the molten coating material toward the coating object;
- a supply unit for supplying the molten coating material to the inkjet unit;
- and
- a heating means which is provided in the supply unit and melts the coating material.