Method of marking graphic or similar patterns on the recorded face of an optical data recording medium and optical data recording medium implementing said method
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United States of America Patent
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Issued Date -
Dec 20, 2007
app pub date -
Apr 26, 2005
filing date -
Apr 26, 2004
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Abandoned
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Abstract
The invention concerns a method of marking graphic patterns on the face (20), called usable, bearing data (2000, 2001) of an optical medium (2) comprising the production of said medium (200) of transparent material, the selective deposit of a first material (203) with reflective property on the usable face over an area in correlation with the graphic patterns, the uniform deposit of a second material (201) with reflective property and the deposit of a layer of protective varnish (202). The first (203) and second (201) materials have different colors making it possible to discern, by contrast effect, the areas covered by the first layer from the adjacent uncovered areas, when the usable face (20) is lighted by a light source (la). The invention also concerns optical media (2), CD or DVD, produced by this method.
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