<p>A fabrication process produces markers for a magnetomechanical electronic article surveillance system. The marker includes a magnetomechanical element comprising one or more resonator strips of magnetostrictive amorphous metal alloy; a housing having a cavity sized and shaped to accommodate the resonator strips for free mechanical vibration therewithin; and a bias magnet to magnetically bias the magnetomechanical element. The process employs adaptive control of the cut length of the resonator strips, correction of the length being based on the deviation of the actual marker resonant frequency from a preselected, target marker frequency. Use of adaptive, feedback control advantageously results in a much tighter distribution of actual resonant frequencies. Also provided is a web-fed press for continuously producing such markers with adaptive control of the resonator strip length.</p>
申请公布号
EP1984902(A2)
申请公布日期
2008.10.29
申请号
EP20070750821
申请日期
2007.02.15
申请人
PHENIX LABEL COMPANY INC.
发明人
JOHANNES, PETER, M.;VOLZ, MARK, C.;HIBSHMAN, MARK, T.;GADONNIEX, DENNIS, M.