by wpengine | Aug 11, 2021
A semi-conducting material has an electrical conductivity value falling between that of a conductor, such as metal, and an insulator, such as glass. Semi-conductive inks can be used to create printed antennae.
by wpengine | Aug 11, 2021
Polyester threads that are either fully or partially embedded down the length of paper during the paper-forming process. Fully embedded threads – typically less than 1.8mm wide – can only be viewed when the document is held up to the light. Partially embedded threads...
by wpengine | Aug 11, 2021
A process that uses a fine mesh with an impermeable coating, selected areas of which have been removed to allow the ink to pass through. Screen printing produces a thick ink layer that is ideal for printing optical effect security features.
by wpengine | Aug 11, 2021
Paper typically manufactured from wood pulp or cotton containing security features such as watermarks and security fibres that are difficult to reproduce.
by wpengine | Aug 11, 2021
Inclusions added to security paper during manufacture comprising randomly distributed short thin fibres with specific optical or spectroscopic properties.
