Magnetic Ink
Ink containing ferromagnetic components which have a specific reaction to the external magnetic field. Images, inscriptions or symbols applied in such ink can be identified by special magnetic sensors or visualized by magneto-optical converters.
![Sweden. Alien's passport issued in 2006: front endpaper. Paper substrate](https://static-content.regulaforensics.com/Hardware-products/knowledge_hub/glossary_documents/MAGNETIC_INK/1l.webp)
a
![Sweden. Alien's passport issued in 2006: the same. The document number and the background image are printed in ink which contains ferromagnetic components. Visualized by the magneto-optical scanner Regula 7701M](https://static-content.regulaforensics.com/Hardware-products/knowledge_hub/glossary_documents/MAGNETIC_INK/2l.webp)
b
Fig. 1. Sweden. Alien's passport issued in 2006:
a — front endpaper. Paper substrate; b — the same. The document number and the background image are printed in ink which contains ferromagnetic components. Visualized by the magneto-optical scanner Regula 7701M
![Azerbaijan. Visa issued in 2012: sticker. Front side. Paper substrate](https://static-content.regulaforensics.com/Hardware-products/knowledge_hub/glossary_documents/MAGNETIC_INK/3l.webp)
a
![Azerbaijan. Visa issued in 2012: the same. The document number and the barcode are printed in ink which contains ferromagnetic components. Visualized by the magneto-optical scanner Regula 7701M](https://static-content.regulaforensics.com/Hardware-products/knowledge_hub/glossary_documents/MAGNETIC_INK/4l.webp)
b
Fig. 2. Azerbaijan. Visa issued in 2012:
a — sticker. Front side. Paper substrate; b — the same. The document number and the barcode are printed in ink which contains ferromagnetic components. Visualized by the magneto-optical scanner Regula 7701M