Magnetic Ink
An ink containing ferromagnetic components, which have a specific reaction to the external magnetic field. The components can be added to the ink of any colour or colourless varnishes. The texts or images printed by the ink can be identified by special magnetic sensors or visualized by special devices.
The magnetic ink may be used on security threads, fibers, for printing serial numbers, texts and images. (fig. 1).
a
b
c
d
Fig. 1. Visualization of ferromagnetic components:
a – local distribution of texts and images. 100 USA Dollars (2006); b – fibers. 5 000 Russian Rubles (1997);
c – security thread. 2 000 Chilean Pesos (2009); d – bar-code. 20 East Caribbean Dollars (1993).
Images are available in the Forensic version of the Database