Substrate

A special material used to produce documents, a background for applying images and embedding of security features.

Main types

Paper is a thin (4–400 mcm) sheet consisting mainly of specially treated small bounded and stitched plant fibers. A special paper is used for printing documents and securities. It contains such security features as watermarks, security fibres and threads, etc. Usually paper doesn’t luminesce in UV-light, contains special supplements and chemical components which prevents mechanical and chemical erasures and other types of forgery.

Photographic paper is a nontransparent material on a paper substrate with light-sensitive chemicals which is used for making positive photo image.

Polymer substrate is an acrylonitrile butadiene styrene, polyester, polycarbonate, polyvinyl chloride.

Fabric is a natural, synthetic, cartboard, leather or other coating materials which are used for producing document.