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US 2024/0428031 A1Published application
Method for reading a marking, and workpiece
OwnerThomas Härtling, Matthias Schröder +4inventors
InventorsThomas Härtling, Matthias Schröder, Marek Rjelka, Christoph Kroh, Björn Erik Mai, Manuela Heymann
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Abstract
In an embodiment a method for reading a marking includes providing the marking on a substrate, the marking being formed with at least one marking material, providing at least one opaque covering layer covering the marking, briefly irradiating the at least one covering layer with electromagnetic radiation to which the at least one covering layer is impermeable; and contactless reading the marking by thermal imaging.
Claims14
A method for reading a marking, the method comprising:
- providing the marking on a substrate, the marking being formed with at least one marking material;
- providing at least one opaque covering layer covering the marking;
- briefly irradiating the at least one covering layer with electromagnetic radiation to which the at least one covering layer is impermeable;
- and
- contactless reading the marking by thermal imaging.
2 more elements
Dependencies are inferred from the claim text.