It seems the printing of banknotes is very secretive as the title of 2 books suggest (1) Bender, Klaus: Moneymakers. The Secret World of Banknote Printing and (2) Terry Bloom: The Brotherhood of Money. The Secret World of Banknote Printers. Just google and you can get them from Amazon.

The "leading global provider of security inks.. for most of the world's banknotes..." is SICPA, a Switzerland company run by the Amon family.