Imprinting method and device for generating diffracting structures

摘要

The arrangement (1) has a micro-stamping station (2) including a set of micro-pattern stamps (15) formed with a relief structure for generating a diffraction-active stamped structure on a surface of a metal object e.g. coin. An application station (3) for depositing a protective layer on the diffraction-active stamped structure formed on the metal object is provided in the micro-stamping station. A macro-stamping station (4) is placed with a set of stamping tools (12) and provided with a macroscopic image relief pattern. The micro-pattern stamp is made of a high-strength hard carrier material i.e. hard metal. An independent claim is also included for a method for applying a diffraction-active structure to a metal object.