ELECTRONIC PAYMENT CARD MANUFACTURING PROCESS
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United States of America Patent
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Issued Date -
Mar 17, 2011
app pub date -
Sep 12, 2009
filing date -
Sep 12, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A payment card manufacturing process for a magnetic device (QChip) with a bit coil array to individually write several dynamic magnetic data bits into the magnetic material. The magnetic device fits inside the payment card's magnetic strip and contributes to the data recorded statically in the magnetic stripe. The magnetic device edges physically nearest the leading and trailing dynamic magnetic data bits are trimmed very closely and precisely by scoring the tops with deep reactive ion etching to produce deep trenches, and then back-grinding up from underneath to the trench bottoms. The magnetic device is inserted into a high precision die or laser cut opening in the magnetic stripe in each payment card. The locations of the static magnetic bits in the magnetic stripe are precisely recorded maintaining continuous signal integrity and integration during card personalization after electronically sensing the X,Y locations of the magnetic device's dynamic magnetic data bits.
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