Chemical etched two dimensional matrix symbols and method and process for making same
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United States of America Patent
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Dec 20, 2013
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May 12, 2008
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Abstract
A chemically etched two dimensional matrix symbol is provided on a substrate. The substrate may be metal or plastic. In another embodiment, a process is described for forming a plurality of two dimensional matrix symbols at the same time in batches. The two dimensional data matrix symbol comprises a substrate, a plurality of grooves and a plurality of raised areas and a plurality of ink spots disposed in the grooves according to a predefined code. The matrix is readable by a scanning device.
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