| 摘要 |
PROBLEM TO BE SOLVED: To perform work without wondering whether or not read is performed and to improve work efficiency by exciting luminous paint by infrared rays emitted from a scanner and recognizing whether or not the scanner reads a bar code by the light emitting phenomenon of the luminous paint accompanying the exciting phenomenon. SOLUTION: The luminous paint 3 is applied to a base material 2 for which the bars 1 having wide and narrow width and fixed length are parallelly formed and use is performed in a radio LAN system. The luminous paint 3 is applied to the base material 2 for which the bars 1 having the wide and narrow width and the fixed length are parallelly formed and the luminous paint is excited by the infrared rays emitted from the scanner. By the light emitting phenomenon G of the luminous paint accompanying the exciting phenomenon, it is judged that the scanner reads this bar code. Thus, even for the bar code stuck to the frame of a rack or a direct placing ground, the situation that whether or not it is read by the scanner can not be judged is eliminated. |
