A management server for managing inventory of articles and a terminal device for inquiring the condition of inventory are provided. Each of the light sources includes a plurality of light-emitting element units. The clamping circuitry also contains voltage regulator transistors and feedback paths. The cell has weaves formed irregularly in a warp direction and a weft direction by at least two of the warp threads and two of the weft threads without periodic repetition. The tape support can include a curved region.