Many of the design features are built around precision printing that can be achieved by the highly specialised presses used in the production of banknotes. These can be extremely intricate.
Others rely on the type of print that can be produced e.g the tactile nature of intaglio print.
There are many types of design elements that can be worked into a banknote to give protection, and the following list refelcts a general sampling of these.
1. Latent Images : Latent images are produced by intaglio print and the protection they offer is directly a result of the tactile nature of intaglio print. Intaglio latent image "the arabic numerals" hidden inside the elaborate design, becomes visible when the note is viewed from the lower left corner toward the middle part of the note.
2. Microlettering : Tiny letters and numerals can be worked into designs and printed by both the intaglio and litho printing processes. With most, if not all counterfeiting techniques these tiny print are lost, so in that respect they offer good protection.
The Arabic numerals indicating denomination "500" are filled with microprintings reading "500" readable
under a magnifying glass.
3. See Through Features : The precision equipment used to print back notes enables the back and front of the litho portions of the notes to be printed simultaneously. They can also be accurately registered to one another.
A feature utilising this accurate registration capability is the see through feature. It comprises 2 different images, one on the front and the other on the back. When the note is held up to the light, a third image is produced by the combination of each image.
The Arabic mumerals "100", printed on both sides, are completely formed upon viewing the note against the light.
The Cotton Rose petals, printed on both sides, are completely formed upon viewing the note against the light.
The floral design "Lotus", printed on both sides, are completely formed upon viewing the note against the light.
Additional counterfeit deterrence features include :
1. Metallic Hologram Foil : On the front side of 100, 500, and 1000 Baht denominations, metallic hologram foil stripe is vertically embedded in the left of the note. Such foil stripe with indication values can be seen in different reflecting colors and in various dimensions, when the note is flipped back and forth and viewed at different angles.
1000 Baht 500 Baht 100 Baht
2. Blind Embossing : The paper deformation that occurs during Intaglio printing is sometimes used as a feature in its own right or can be used to produce an embossing effect of a feature produced by the lithographic process. It is also possible to produce inkless latent image effects using blind embossing.
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