| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for marking a substrate or an article, using durable, reliable and stable coding, by thermal spraying of not breaking and deteriorating the coding, and a method of imparting a persistent mark on the substrate or article.SOLUTION: The present invention discloses a device and a method for marking a substrate, using a plasma generator (5), and a mark corresponding thereto. A plasma jet (11) is shot directedly onto the substrate (14), and is overlapped with a powder jet (12). Powder (20) and a powdery marking material (30) are mixed in an inside of a powder feed and dispersion unit (7). The mark forms an adhesive layer (15) comprising a powder material distributed uniformly with the marking material and embedded persistently. |
