Examples of 'optically variable' in a sentence
Meaning of "optically variable"
The term 'optically variable' refers to an attribute or characteristic of an object or material that exhibits different visual properties when viewed from different angles or under varying lighting conditions. It often describes security features or elements used in printing banknotes, identification documents, or product packaging to deter counterfeiting. Examples of optically variable effects include color shifts, holographic images, or iridescent patterns
How to use "optically variable" in a sentence
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optically variable
This technology is based on optically variable inks.
Optically variable magnetic security threads and stripes.
This invention relates to optically variable devices.
Optically variable elements are known in the field of security printing.
It is also used on optically variable inks.
Optically variable ink.
Said document is not related to optically variable pigments.
Optically variable element.
Diffractive optically variable device.
The flakes can be of a single color or can be optically variable.
This creates two optically variable regions having a different appearance.
Said coating comprises preferably magnetic optically variable particles.
Particles of a magnetic optically variable pigment are dispersed in a liquid paint or ink medium.
Typically the further optical effect is an optically variable effect.
The optically variable security device may further comprise a metallised layer.
See also
The particles may particularly be optically variable pigment flakes.
The optically variable pigments of the present invention are inherently light fast.
Rotogravure printing processes for producing optically variable security features.
Embossing an optically variable effect generating structure into the metal powder.
Most preferred suitable magnetic or magnetizable particles are optically variable magnetic particles.
Optically variable devices can be made in numerous ways to achieve a variety of effects.
Thus there have been provided ten examples of paired optically variable pigments.
Deletion of an image of said optically variable security element and possible replacement by another.
A second type of production process results in a different design of optically variable pigments.
Optically variable inks may further comprise one or more color constant pigments.
There can be other printed information that consists of optically variable ink.
Passivation of optically variable pigment and waterborne coating compositions containing the same.
The marking composition can also comprise a plurality of different optically variable pigments.
There is a need for optically variable devices where some transparency can be obtained.
Multilayered pigments exhibiting such a startling effect are also called optically variable pigments.
The optically variable effect generating structure can take any conventional form.
Various combinations of these layers can be utilized to achieve the desired optically variable effect.
Optically variable effects generating structures are widely known and used as security features.
The optical security elements are generally optically variable elements such as diffractive structures including holograms.
Optically variable printed effect based on microlens technology in security foils and security threads.
We have devised a completely novel technique for providing optically variable effect generating structures on a substrate.
The optically variable elements may be made otherwise than with orientable magnetic pigments.
This window element is usually equipped with further optically variable effects such as hologram foils.
The optically variable device can be applied to the security document using an adhesive layer.
This effect is obtained by two superposed impressions created using the same optically variable ink.
The first and second optically variable elements may also each comprise a lens array.
Such routines may use stored or calculated data to give a three dimensional optically variable effect.
Such optically variable inks typically contain a fluorescent compound which responds to infrared or ultraviolet light.
The invention also involves embossing an optically variable effect generating structure into the metal powder.
The optically variable effect can be viewed against a background defined by the reflection enhancing materials.
Field of the Invention The present invention is related to surface treated optically variable pigment.
The third and fourth optically variable zones M and N may have a substantially identical appearance.
A sheet as claimed in claim 2 wherein said flakes are optically variable.
In a basic pH environment, the optically variable pigment is oxidized.
An optically variable device in the form of a holographic structure is indicated by 21.
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