An image or an ornamental pattern which is a background for other images, serial numbers, text, etc. It makes document fraud more complicated as in case of mechanical erasure or etching of either text data, or security features, the background pattern is damaged.

The background pattern consists of:

thin parallel or intertwined lines that can have variable thickness and form pseudo-three-dimensional elements due to line curves (regular grid). The lines of the grid may be of one color or multiple colors;

※ microprinting;

※ design elements formed by solid colors;

※ special raster elements, anti-copy and guilloche patterns.

Background patterns are printed by offset, rainbow and Orlov printing.

a                                                                                                b

a — Polymer substrate 

b — Background pattern formed by microprinting graphic pattern. Rainbow printing