High contrast surface marking using metal oxides
DCFirst Claim
1. A thermally activated, chemically based marking method comprising the steps of:
- applying a layer of mixed metal oxide material containing an energy absorbing enhancer to a metal substrate; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancer in accordance with the form of a marking to be applied, thereby forming a marking layer atop the substrate.
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Abstract
A method of laser marking metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which comprises applying to the material to be marked a variable thickness layer of marking material containing energy absorbing enhancers then irradiating said layer with a laser or diode based energy source such that the radiation is directed onto said layer in accordance with the form of the marking to be applied, and using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
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Citations
38 Claims
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1. A thermally activated, chemically based marking method comprising the steps of:
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applying a layer of mixed metal oxide material containing an energy absorbing enhancer to a metal substrate; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancer in accordance with the form of a marking to be applied, thereby forming a marking layer atop the substrate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A thermally activated chemically based marking method comprising steps of:
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applying a material containing a metal oxide comprising an energy absorbing enhancing component to a substrate to be marked in the form of a marking to be applied; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancing component, thereby forming a marking layer atop the substrate.
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8. A thermally activated chemically based marking method comprising the steps of:
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applying a layer of mixed metal oxide material containing an energy absorbing enhancer to a substrate selected from the group consisting of aluminum, brass, chrome, copper, nickel, steel, stainless steel, tin, glass, ceramic, porcelain, and plastic; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancer in accordance with the form of a marking to be applied, thereby forming a marking layer atop the substrate. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A thermally activated chemically based marking method comprising the steps of:
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applying a mixed metal oxide material containing an energy absorbing enhancer to a carrier;
placing the carrier in contact with the substrate to be marked; and
irradiating the carrier with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancer in accordance with the form of a marking to be applied, thereby forming a marking layer atop the substrate.
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21. A thermally activated chemically based marking method comprising the steps of:
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applying a layer of mixed metal oxide material containing an energy absorbing enhancer to a substrate to be marked in the form of a marking to be applied; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancer, thereby forming a marking layer atop the substrate. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A thermally activated chemically based marking method comprising steps of:
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applying a layer having a mixed metal oxide component and an energy absorbing enhancing component to a substrate selected from the group consisting of aluminum, brass, chrome, copper, nickel, steel, tin, glass, ceramic, and plastic; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancing component, thereby forming an adhered layer atop the substrate.
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29. A thermally activated, chemically based marking method comprising steps of:
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applying a layer of a marking material comprising at least one metal compound to a markable substrate comprising at least one material selected from the group consisting of metals, glasses, ceramics and plastics; and
irradiating said layer with a radiant energy beam having a wavelength selected to be absorbed by said marking material, thereby forming a bonded layer atop said substrate. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A thermally activated chemically based marking method comprising steps of:
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applying material having a metal oxide component and comprising an energy absorbing enhancing component to a carrier;
placing the carrier in contact with the substrate to be marked; and
irradiating the carrier with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancing component in accordance with the form of a marking to be applied, thereby forming a marking layer atop the substrate.
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38. A thermally activated, chemically based marking method comprising the steps of:
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applying a layer having a metal oxide component and comprising an energy absorbing enhancing component to a metal substrate; and
irradiating said layer with a radiant energy beam having a wavelength selected to excite the energy absorbing enhancing component, thereby forming an adhered layer atop the substrate.
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Specification