| 摘要 |
The invention relates to the marking of cultured pearls in order to improve traceability and authentication by applying, to the nucleus, a mark that is visible or measurable by using X-rays or by fixing, to the nucleus or to the pearl, one or more microchips that can be activated by radio frequencies (RFID) emitted by a reader capable of establishing a communication with the microchips. Currently, nothing enables the origin of a cultured peal to be determined except by marking a number onto the surface of the pearl. This number or this mark can be applied by means of a laser (Patent No. EP 0 749 799 A) or by gas-phase material deposition (Patent No. EP 0 897 021 A). The drawback of these methods exist in the ability to erase or alter the number. The inventive device serves to apply a number, a text, drawing or barcode, or to fix one or more microchips to the surface of the nucleus before the nucleus is inserted into the pearl oyster. The microchip(s) can also be fixed to the pearl. The material used for writing the number should be opaque to X-rays and be tolerated by oysters and humans. |
