Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. Word lines are formed on a semiconductor substrate Bit lines are formed separated from the word lines and perpendicular to the word lines. The reflective board has a second antenna array and a first antenna array surrounded by the second antenna array, wherein the first and the second antenna array are composed of a plurality of first microstrip reflective units and a plurality of second microstrip reflective units, respectively. Vehicle description data is mapped into the set of vehicle-description attributes in response to locating the vehicle description data in the vehicle service record. The ink has low viscosity, excellent photo-polymerizability, remarkably excellent curing property, good dispersion stability, causes no dissolution and swelling of ink contacting materials in a printer, and shows excellent discharge stability from nozzles, an excellent adherence property to a recording medium, excellent solvent resistance and water resistance.