Method and apparatus for detecting the presence of magnetic ink within a package by magnetizing and selectively remagnitizing the ferro-magnetic materials in the package
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United States of America Patent
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Mar 29, 1988
Grant Date -
N/A
app pub date -
Aug 5, 1985
filing date -
Aug 5, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for detecting the presence of magnetic ink within a package without opening the package or altering its contents. The method and apparatus detects items marked with magnetic ink, such as bank checks, in an unopened package independently of the item's location within the package and despite the presence of such magnetic clutter as staples and paper clips. The apparatus and method is designed to eliminate magnetic noise from the equipment itself and from the environment.
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