Laser pigments for ceramics
AssigneeChemische Fabrik Budenheim KG
InventorsJoerg Lind, Ruediger Wissemborski, Melanie Murmann, Christian Kohlpaintner
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Abstract
A coating containing metal phosphate-based compounds and mixtures, mixed compounds, mixed salts or adducts which contain such compounds as pigments for the production of single-coloured or multi-coloured markings, inscriptions and/or decorations by means of laser light in and/or on ceramic, stoneware, pottery, earthenware, porcelain, ceramic glazes, engobe, glass or glass paste (enamel). The method of marking by applying a laser to the coatings is also provided
Claims21
1-10. (canceled)
A material comprising a ceramic, stoneware, pottery, earthenware or porcelain or a coating comprising a ceramic glaze, an engobe or an enamel, said material containing a laser markable pigment that yields different colors depending upon pulse frequency, power and application time of a laser applied to the material.
A method for forming an inscription in a material comprising a ceramic, stoneware, pottery, earthenware or porcelain or a coating comprising a ceramic glaze, an engobe or an enamel, comprising incorporating a laser markable pigment into the material that yields different colors depending upon pulse frequency, power and application time of a laser applied to the material and directing a laser at a pulse frequency, power and time selected to obtain a desired color or combination of colors in the material.
Dependencies are inferred from the claim text.