There are provided a human body sound transmission system and a method. The stabilizer can be either titanium dioxide or aluminum dioxide. The ultrasonic vibration system is operated to impart ultrasonic energy to the textile web to facilitate the distribution of the first treatment agent through a first extent of the thickness of the textile web. A traffic information service is provided to the vehicle navigation unit, wherein the vehicle navigation unit is configured for displaying the traffic information with the second map. This apparatus classifies printed documents by using printed document identifiers when a last page of a printed document is completely output so that printed documents may be easily distinguished when several users use one image forming device and output many different documents at the same time. The first electrode is disposed on the second insulating layer and in contact with the edge portion of the power supply electrode.