A coating method forming a coating film having a predetermined film thickness on a band-like support body. Coding is performed in an N-bit system, where certain codes are represented with N bits and other codes are represented with bits. One end of the transmission shaft penetrates into the mixing drum. Upon receipt of a call directed to the subscriber’s telecommunications unit, ringing is provided to the subscriber’s telecommunications unit and the telecommunications units serving as extensions. The sensor enters the off state when the medium guide unit is located between the first position and the second position.