In a process for attaching indicator elements onto a disposable garment, indication sheets with indicator elements and liquid-absorbent cores are fed onto inner and outer surfaces of an outer layer web. As a result, the printing original is recorded along a helix wound around the exposure drum. Furthermore, the transmission rate is switched so that the amount of interference with others is within the allowable range according to the channel condition between the communication terminal apparatus and base station apparatus. In a preferred embodiment, the core region includes a centralized gain region, which in turn includes a dark region that is no more than 30% of the area of the gain region.