Transparent paper and method of making same
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United States of America Patent
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Issued Date -
Jul 24, 2008
app pub date -
Jan 19, 2007
filing date -
Jan 19, 2007
priority date (Note) -
Abandoned
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Abstract
The invention teaches a novel paper substrate having a transparent field of a dense array of a plurality of laser-formed microperforations. The resultant paper can be useful as a replacement for glassine paper, and can be useful in secure documents. The transparent field is integral to the paper substrate and can be formed by laser techniques surprisingly resulting in a transparent field retaining acceptable strength characteristics after lasing. The transparent field acts as a self authentication device.
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