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Fluorescent Security Thread

Fluorescent Security Thread
A thin strip of plastic, metallic, or other material embedded or partially embedded in the substrate during the paper manufacturing process; fluoresces when exposed to UV Light reaction can also be multi-coloured.




Fluorescent Security Thread
Pengaman berbentuk jalur dengan tinta fluorescent berupa segaris tipis plastik, logam atau material lainnya yang digabungkan secara langsung ataupun tidak langsung pada saat proses pembuatan kertas, pada saat di ekspos fluorescent ini bisa menjadi berbagai warna.



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See-trough Register

See-trough Register
Images in accurate front-to-back register. Designs or partial motifs seemingly printed at random on the front and back of the substrate, but which match up perfectly or form a complete motif when viewed by transmitted light. Imperfect register in counterfeits will produce a blurred image when viewed by transmitted light.





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Anti Scan / Anti Copy Pattern

Anti Scan / Anti Copy Pattern
Printed security features integrated in the background printing to protect against simulation through copying.
The printed images and patterns contain embedded (hidden) information that is invisible to the naked eye under normal inspection conditions but becomes visible or legible, or causes flaws (mistakes) to appear after copying or reproduction with a scanner.
Example:
Orientation- and angle-modulated fine-line structures (SAM = Screen Angle Modulation)


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Photochromic Ink

Photochromic Ink
Photochromic inks change their colour when exposed to UV light. When the UV light source is removed, the colour change stays for a certain time before the colour reverts to its original state. Examples: Estonia: passport, Malta: passport (since November 2000).






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