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Animated matt effects on holograms that are aligned in such a way so as to make pumping or running effects visible.
Banknote papers are enhanced by the addition of security foil elements and printed effects.
- Authentication feature
The condition of a security element of a banknote or security document being genuine or of an ID document being unaltered.
- Banknote paper
The banknote substrate is a special paper produced on a cylinder mould paper machine and usually made of 100% cotton.
- Banknote substrate
Banknote substrate based on various materials such as cotton, polymer or a combination of the two (so-called hybrid substrates).
- Bi-metallic foil stripe
A security foil element that can be distinguished by having two different metals (e.g. aluminum and gold) placed next to one another.
Abbreviation of “banknote”
Description of the lifecycle of banknotes starting with their issue and ending with their destruction.
- Cleartext thread
Color alternates between two contrasting tones when the viewing angle is changed. Color-shifting printed effects can be generated using different technologies. Example: Denomination value on the back of the 50-euro banknote.
- ColourShift thread
Security element featuring an optical surface divided into two sections. The ColourShift section changes color dramatically when tilted while the ColourFix section retains its original color. At a particular angle, the ColourShift and ColourFix sections are the same color, but then change color when viewed at a different angle.
- ColourShift/ColourFix thread
A security thread in the banknote paper with an optical surface featuring ColourShift/ColourFix.
Raw material used for making banknote paper. Cotton is a natural fiber that is extracted from the seed hairs of the cotton plant. The textiles industry primarily uses long cotton fibers to produce high-quality materials. The short fibers that the textiles industry disposes of are used for the production of banknote paper.
- CountryCode thread
Security threads that alternately depict a text element (usually the name of the country) and the country’s flag. CountryCode threads are completely embedded in the security paper, e.g. for passports.
- Cylinder mould watermark
Also known as a genuine or multitone watermark. This is characterized by a high imaging accuracy and is able to represent the mapping of motifs in tone value, e.g as preferred for mapping portraits in banknote paper.
See also Fourdrinier watermark.
Production process in which text or design elements are removed from a metallic layer so that they are legible in transmitted light. Used for security threads and security stripes (LEAD®) in banknotes.
Individual value in a series of banknotes. For example, the euro comes in seven denominations: 5, 10, 20, 50, 100, 200, and 500 euros.
- Electrical conductivity
The electrical conductivity of security elements can be measured with sensors and serves as a machine-readable authentication feature.
- Embedded security feature
Security elements embedded in the paper during the paper production process. These security elements are considered to be especially secure since they are completely integrated in the paper and cannot be removed or added retroactively without destroying the paper, e.g. watermarks, security threads, security fibers, etc.
- Embossed hologram
See Hologram embossing.
Term referring to (security) characteristics.
Subtle yet effective security feature in combination with Hybrid(TM)
- Foil embossing
Embossing of an image in an embossing varnish applied to a foil, e.g. a hologram structure.
- Fourdrinier watermark
Also referred to as a Moulette watermark, produced with Fourdrinier paper machines, in which after sheet formation the nonwoven fibers are compressed or displaced into characters via a forming roll with images. In transmitted light, the result appears as a simple light/dark watermark. One typical application is for commercially available printing and writing paper.
See also Cylinder mould watermark.
Haptic perception refers to actively feeling an object’s size, contours, surface texture, etc. In the case of banknotes, it is the raised intaglio embossing and print which can be felt in particular. It is therefore a strong feature for the security of a banknote. See also Tactility.
The term “hologram” is incorrectly used to refer to so-called surface embossing which uses light diffraction to show an image and angle-dependent colors. In addition to the visual properties of the image, the metallized aluminum structures serve as anti-copy protection features. They belong to the group of “optically variable devices” (OVDs). This hinders reproduction by means of scanners or color copiers.
See also Hologram threads and Hologram stripes.
- Hologram embossing
The holographic structure is embossed in a suitable layer of varnish applied previously by means of an appropriate tool.
- Holographic foil = Hologram foil
Polyester foil embossed with a hologram; the foil is usually applied in stripes to the substrate surface using the so-called hot-stamping process which involves pressure and heat.
- Holographic stripe = Hologram stripe
Security stripe with a holographic surface, normally available in widths of 8 to 15 mm, for application on a security substrate. Also known as the brand LEAD®.
- Holographic thread = Hologram thread
Security thread with a holographic surface, normally available in widths of 2.5 to 5 mm, for embedding in a security substrate. See also Security thread.
Holography is a method for rendering objects in three dimensions. The image is created by means of laser beams. The result, the so-called hologram, contains all the information on the three-dimensional structure of the object, providing considerably more detail than a normal photograph. In appropriate lighting, the original object is visible and can be seen at various angles.
- Hot stamp foil
Foil with thermally activated release layers and adhesives applied entirely or partially to a substrate.
Hybrid™ is an innovative combination of protective polyester foil around a cotton fibre core.
- Intaglio print
Special high-security printing process, e.g. for banknotes and security printing. The result of such printing is characterized by the particular type of color embossing. Such prints are raised and can be felt (tactility).
- Iridescent printed effect
Iridescent color coating that renders various colors visible depending on the angle of view. The change in color is caused by the embedded pigments. Security element frequently used in banknotes which is discreet and hard to copy.
- Iridescent stripe
- Laminated foil
Foil stripe applied to a banknote paper which, particularly in the case of window elements, serves to cover the window. These stripes are normally equipped with additional optically variable printed effects.
LEAD is an acronym for “Long-lasting Economical Anti-copy Device.”
The security system applied to the surface of the banknote or security paper, consists of a paper primer, a hologram stripe applied to it, and an integrated overprint, typically by means of intaglio embossing.
- Levels of authentication
The authenticity of banknotes can be ascertained in various ways:
Level 1: using human senses such as seeing or feeling (so-called human features).
Level 2a: with the assistance of devices such as a magnifying glass, UV light, filters, etc.
Level 2b: sensors in processing machines (machine-readable features) and / or forensic devices, e.g. high-tech lab equipment (such as electron microscopes).
- Liquid crystal
Optically active structures, e.g. for the generation of color-shifting printed effects. See also Colourshift.
- Long grain
The long grain orientation of the paper fibers runs along the short side of the sheet. Standard in commercial printing. See also Short grain.
Banknote paper with dirt-resistant features to increase the service life of a banknote.
- Machine readability
Characteristic which allows for automatic processing of banknotes and authenticity checks.
- Machine-readable feature = Machine-readable authentication feature
- Magnetic properties
Banknote features for automatic banknote processing using special banknote processing machines.
- Micro optical structure
Is a combination of grid arrangements of microlenses and microstructures and their position relative to one another. This is one way to generate effects of magnification, depth and motion.
Magnetic feature of security threads in banknotes.
MultiCode enables various coding and thus customer-specific information.
- Negative text
The implementation of a design in a tool for the production of security elements.
Acronym for “optically variable devices,” which refers to security elements with optically variable surfaces such as holograms, iridescent printed effects, Colourshift, Moiré-magnifying features, etc.
Acronym for “optically variable ink”.
Acronym for “optically variable stripe”.
See also OVD.
- Paper web formation process
Occurs during paper production on the cylinder mould machine when fibers are placed and arranged on the mould.
- Patch, Hologram
- Pixel watermark
Cylinder mould made watermark with pixel elements showing dark points (pixels) in front of a large light background.
Round or straight-edged planchets which are integrated in the paper across the entire surface or within defined strips. Depending on the design, planchets may have different optical properties, e.g. fluorescence, iridescence, microtext. Rarely seen in banknotes these days.
- Plastic banknote
Hidden information that is invisible to the naked eye but can be made visible under special lighting conditions. Pole is a very effective simple and secure security element for protection against counterfeiting at the point of sale.
- Polymer banknote
- Positive text
Text on a light (transparent) background.
Typically a filling layer applied to the banknote surface by means of silk screen printing for smoothing the contact surface for foil application. It can contain luminescent and / or machine-readable properties.
- Rainbow fluorescence
Fluorescence that glows in the colors of the rainbow upon application of UV light
Packaged unit containing a specific number of paper sheets (e.g. 500 sheets).
- Registered positioning
Positioning of a security element or security print at defined XY coordinates, e.g. on the banknote surface.
A security thread on the basis of micro mirrors with Colourshift showing a dynamic Colourshift reflection.
- Security features = Security elements
Collective term. Elements on banknotes and security documents for the purpose of determining authenticity and protecting against counterfeits.
- Security fibers
Security element made of rayon, plastic, or paper embedded in the banknote paper. The fibers are either visible or invisible to the viewer. The invisible fibers are only detectable under a UV lamp. They may glow in various colors.
- Security foil
- Security level
Usage-based classification of security elements. There are usually three classifications:
1. The public – without the assistance of devices
2. Specialists with the assistance of devices and commercial banks
3. Central banks
- Security papers
Papers that are secured against fraudulent copying and that are not generally available. These include, for instance, papers for passports, checks, and other documents.
- Security stripes
See Hologram stripes.
- Security thread
Foil stripes with built-in security elements, typically in the width of 0.8 to 5 mm, embedded into banknote and security paper. Options include fully embedded threads and windowed threads. For the embedding a cylinder mould paper machine is used. Security threads can include visual and functional surfaces, e.g. negative text by demetallization of an area, hologram, Colourshift, magnetic print, fluorescence, electrical conductivity, etc.
- See-through register
Originally a pure print security element that, when held up to the light, combines elements of the front and back of a banknote into a complete image. Today the security level is increased with an additional placeholder in the form of a watermark.
- Short grain
The lengthwise orientation of the paper fibers runs along the long side of the sheet. Standard in banknote paper. See also Long grain.
- Silk screen print
Printing process for the application of relatively thick layers of ink in roll and sheet printing. Typically used in banknote and security printing for the application of printed effects, e.g. iridescent printed effects.
The sound typical of banknotes. Experts also refer to this as crispness.
Term meaning sample; specimen banknote = sample / banknote for promotional purposes.
Base material for printing security documents, e.g. cotton paper for banknotes.
Banknote / Security paper with synthetic fiber content for increased mechanical stability and with a LongLife coating for moisture and soiling resistance.
- Tearing resistance
A measure of the tensile strength of substrates in mN as per ISO 1974.
- Tensile strength
A measure of the tensile strength of substrates in kN/m as per ISO 1924.
Security paper for counterfeit-protected documents that is particularly suitable for personalization by means of laser printing.
- Transfer foil
A stripe applied to a security paper whose carrier foil is removed during the application process. These stripes are normally equipped with additional optically variable effects.
Innovative window security element in banknotes based on windows in the substrate which are sealed with a laminate foil. This window element is usually equipped with further optically variable effects such as hologram foils.
- varifeye® C2
Window security element in banknotes with clear change of image when the viewing situation is altered.
- View, incidental light, transmitted light, UV light
It is possible to check banknote paper in three different views: incidental light (i.e. the banknote is in front of the viewer), transmitted light (i.e. the banknote is held up to the light) and UV light (i.e. viewing with a UV lamp). The security features visible change depending on the view.
A watermark is made during paper production by means of various thicknesses of paper – either thicker or thinner than the surrounding material – which results in a gray-toned image being visible. For banknotes, the cylinder mould process is used to apply watermarks that appear three-dimensional.
- Watermark, allover
Watermark motifs evenly allocated over the whole surface of a paper.
- Watermark, cylinder mould
- Watermark, electrotype
- Watermark, fourdrinier
Also referred to as a moulette watermark, produced with fourdrinier paper machines, in which after sheet formation the nonwoven fibers are compressed or displaced into characters via a forming roll with images. In transmitted light, the result appears as a simple light/dark watermark. One typical application is for commercially available printing and writing paper.
- Watermark, HighLight
Synonym for electrotype, e-type, watermark; generated during the sheet formation process and serves to especially highlight important information. This type of watermark is very light (because it is thin) and clear (because it is “sharply defined”). Example: indication of the value of the banknote within the watermark on euro banknotes.
- Window thread
A security thread embedded in the banknote and appearing on the paper’s surface at defined points on the banknote (windows). When viewed straight on the security thread is partially visible, and appears across the entire length in transmitted light.