MICROPRINT

An image (figure / symbol / text) being 0,15–0,3 mm high which is performed by means of printing, blind embossing, demetallization, holography and etc. Microprinting is widely used in security documents where it comes as a background, forms patterns and images, enhances protection of holograms, security threads, etc.

Types of microprinting:

• positive — dark letters or figures on a light background;

• negative — light letters on a dark background (so-called "reverse printing", demetallization).

a — Polymer substrate; b —  Microprint. Stripe with micro images of the U.S. presidents; c —  Zoomed fragment. Portrait of Barack Obama

a —  Polymer substrate; b —  Negative and positive microprinting. Offset printing

a —  Background pattern. Paper substrate; b —  The background pattern is formed by microprints. Offset printing