An airless applicator may deliver highlow viscosity liquids or semi-liquids, and contains a valve controlling flow between a product reservoir and an intermediate pooling area, while a narrow opening between the intermediate pooling area and a product dispensing chamber controls flow therebetween. A data processing section converts an optical image of the object photographed by the photographing optical system into digital image data, and records the converted image data. After curing the fluid containing the conductive particles, the fluid is irradiated with a laser to form an antenna. The nodes can be shaped in the form of triangles due to this particular geometry’s favorable ability to accumulate and discharge voltage, but may also be formed in a variety of other geometries.