Method for reactivation of magnetic detection tag and machine for reactivation of magnetic detection tag
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United States of America Patent
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Issued Date -
Jun 29, 2006
app pub date -
Dec 12, 2005
filing date -
Dec 13, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention discloses a method for reactivating a magnetic detection tag, which comprises exposing a magnetic detection tag having a soft magnetic substance layer and a hard magnetic substance layer, to an alternating magnetic field generated by applying an AC power to a coil, moving, in this state, either or both of the magnetic detection tag and the alternating magnetic field, thereby sweeping the magnetic detection tag in the alternating magnetic field to demagnetize the magnetized hard magnetic substance layer of the magnetic detection tag; and a machine for reactivating a magnetic detection tag.
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