MARKER FOR CLOTH, METHOD FOR DETECTING MARKER FOR CLOTH AND APPARATUS THEREFOR

摘要

PURPOSE:To provide a marker for a cloth suitable for detecting, e.g. a seam part of the cloth, a method for detecting the marker for the cloth and an appara tus therefor. CONSTITUTION:This marker 1 for a cloth is constructed from, e.g. an amorphous alloy. This method for detecting the marker for the cloth is to run the cloth having the marker 1 for the cloth, apply an AC magnetic field from a transmitting loop-type antenna 8 to the cloth, thereby receive an excitation signal from the marker 1 for the cloth excited with the AC magnetic field with a receiving loop-type antenna 9, then fractionate a harmonic component of the excitation signal with a spectral analyzer 11 and detect the marker 1 for the cloth relatively to the cloth from the state of the harmonic component.