Low the magnetic mechanical electronic goods supervisory marker which possesses the coercivity bias component

摘要

(57) Abstract In order the magnetic mechanical EAS marker (10) the bias component of for the sake of (16) to form, the material which is used has the coercivity which is lower than coercivity of the bias component which is used in the normal magnetic mechanical marker. The marker which was formed this making use of the coercivity material low (10), it can nullify the AC magnetic field level which is required for the nullfication of the normal marker (curved line 26) compared to low by adding the AC magnetic field of level. It is low, the coercivity bias component (16) the marker which it possesses (10), rather than clearance from the nullfication device in former custom, when being large, it can nullify.