It contains overt and hidden security features such as Invisible Personal Information (IPI), letterscreen, microprinting
, and UV reactive ink, among others.
The demand for 3D-printing skills will continue to grow as there are new developments in microprinting
and tissue engineering.
The hologram stamp with microprinting
was made by Kurz, Germany, and printed by Cartor Security Printing, France.
A first level of difficulty presented to the counterfeiter is the use of printing techniques involving specific expertise or tools: embossing, microprinting
, microperforation, inks or dyes having particular characteristics, etc.
Some of the security features that can be utilized are; repetitive hollow void patterns, thermochromic “Rx” ink, state seal background, security back print, unique ID and barcoding and microprinting
So far, 3--D microprinting
has been used only in research laboratories, because it's pretty slow.
Piezo inkjet technology offers microprinting
and macroprinting processes new and exciting product applications.
To check microprinting
"200 som" on the security thread in the light.
notes have microprinting
, which is so small it's hard to see with the naked eye.
Other technologies include microprinting
, infrared- or UV-sensitive printing, guilloche printing and incorporation of RFID.
Not the scifi variety but the kind produced by microprinting
United States banknotes contain a large number of security features to deter counterfeiting, including embedded security threads that glow different colors by denomination under UV light; large, complex line-drawn presidential portraits; watermarks; embedded fibers; color-shifting ink (the color of which differs by denomination); microprinting
too small to be reproduced by current-generation photographic copiers and consumer-level scanners; fine-line printing; color over-printing in subtle shades; and embedded machine-readable features.