| 摘要 |
<p>The present invention includes a method and apparatus for marking metal or another product for identification, with steps of: (a) forming on a product or on a tag to be attached to said product, a layer of coating containing an additive that is darkenable under action of a CO2 laser beam (12, 16, 20) to form identification indicia; (b) providing laser beam emitting CO2 laser (10) that raster-scans in the Y-axis (28) via galvanometer (26), mirror (22), control electronics (30), amplifier (34) and signals (32, 36); (c) effecting impingement of said laser beam onto said layer, wherein one or more of said laser beam or said coating layer moves in the X-axis forming identification indicia from said additive and (d) if said layer was applied to a tag, attaching said tag to said product. The laser beam is deflected and focuses by mirrors (14, 22), lens (18) and beam expander assembly (24). Another aspect of the present invention is the laser marked identification tag disclosed herein.</p> |
