APPARATUS AND METHOD FOR ANALYSING A SECURITY DOCUMENT
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United States of America Patent
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app pub date -
Apr 25, 2012
filing date -
Jun 6, 2007
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Abandoned
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Abstract
We provide an apparatus and method for analysing a security document using x-rays. A security thread is provided in a security thread region of the document. An x-ray source illuminates the security document and an x-ray detector receives x-rays from the security thread region of the document and generates a corresponding detector response. A processor analyses the detector response and generates an output signal indicative of the structure of a security thread present within the region.
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