Laser engraving methods and compositions, and articles having laser engraving thereon
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Dec 25, 2003
app pub date -
Dec 20, 2002
filing date -
Dec 24, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention provides a composition having laser engraving properties, comprising a host material and an effective amount of a laser enhancing additive. The laser enhancing additive comprises a first quantity of least one of copper potassium iodide (CuKI.sub.3) or Copper Iodide (CuI), and a second quantity at least one substance selected from the group consisting of zinc sulfide (ZnS), barium sulfide (BaS), alkyl sulfonate, and thioester. The composition can be engraved with grayscale images by an Nd:Yag laser and can be added to laminates or coatings. The composition can be used during the manufacture of many articles of manufacture, including identification documents.
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