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US 8,540,285 B1Granted
Chemical etched two dimensional matrix symbols and method and process for making same
AssigneeTexas Nameplate Company, Inc.
InventorRoy Dale Crownover
Life of this patent
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Abstract
A chemically etched two dimensional matrix symbol is provided on a substrate. The substrate may be metal or plastic. 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 includes 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.
Claims8
A method of forming a two-dimensional matrix symbol on a metal substrate, the method comprising:
- forming, on the metal substrate, a plurality of grooves and a plurality of raised areas relative to the grooves;
- chemically bonding ink to the metal substrate in the plurality of grooves to form a non-human-readable two-dimensional matrix arrangement that fits within a square of 0.25 inches per side;
- wherein the non-human-readable two-dimensional matrix arrangement is configurable to convey 200 alphanumeric characters;
- and
- wherein the non-human-readable two-dimensional matrix arrangement is readable by a computer.
2 more elements
Dependencies are inferred from the claim text.