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2. Security printing - Wikipedia

   en.wikipedia.org/wiki/Security_printing

   Security printing is the field of the printing industry that deals with the printing of items such as banknotes, cheques, passports, tamper-evident labels, security tapes, product authentication, stock certificates, postage stamps, and identity cards.

3. Thermal-transfer printing - Wikipedia

   en.wikipedia.org/wiki/Thermal-transfer_printing

   Thermal-transfer printing is done by melting wax within the print heads of a specialized printer. The thermal-transfer print process utilises three main components: a non-movable print head, a carbon ribbon (the ink) and a substrate to be printed, which would typically be paper, synthetics, card or textile materials.

4. Polymer banknote - Wikipedia

   en.wikipedia.org/wiki/Polymer_banknote

   The 25-, and 50-rupee notes are printed by Oberthur Technologies on Innovia Security's Guardian substrate and the 500-rupee note is printed by De La Rue on its Safeguard (formerly Flexycoin) substrate. [69] Lebanon: 22 November 2013 The Banque du Liban issued a £L50,000 banknote in polymer to commemorate the country's 70th anniversary of ...

5. Die proof (philately) - Wikipedia

   en.wikipedia.org/wiki/Die_proof_(philately)

   Die proofs for engraved stamps are normally printed under great pressure onto oversized card and, as they are printed from the master die, they are normally of high quality. By contrast they may also be printed on India Paper, a strong, thin, opaque paper. The proofs are not necessarily in the same colour(s) as the issued stamp.

6. Tamper-evident technology - Wikipedia

   en.wikipedia.org/wiki/Tamper-evident_technology

   The impact from a postmarking machine then leaves a UV-visible mark as well as an ink mark which identifies attempts to reuse stamps. In a similar vein, asset-numbering labels on corporate equipment (PCs and the like) are often designed to leave an imprint of either the serial number, or the word "VOID" if the label is peeled off.

7. Trodat - Wikipedia

   en.wikipedia.org/wiki/Trodat

   It specialises in self-inking stamps with a built-in stamp pad. The Trodat Printy stamp, which was introduced to the market in 1976, has sold over 300 million, according to the manufacturer's data. Trotec, founded in 1997, provides laser systems, and offers engraving , marking, and cutting services.