Direct laser engraving of intaglio printing plates

Harald Deinhammer; Franz Loos; Daniel Schwarzbach; Peter Fajmann

doi:10.1117/12.526899

3 June 2004 Direct laser engraving of intaglio printing plates

Harald Deinhammer, Franz Loos, Daniel Schwarzbach, Peter Fajmann

Author Affiliations +

Proceedings Volume 5310, Optical Security and Counterfeit Deterrence Techniques V; (2004) https://doi.org/10.1117/12.526899
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

Traditionally, Intaglio printing is one of the key security elements for banknotes and security documents, providing high-resolution fine-line elements and the characteristic tactility easily recognized by the public. The conventional process of creating Intaglio printing-plates involves multiple production steps from the hand-engraving of the artist and the computer-aided-design of security elements to the final, print-ready metal plate. We present the results of a feasibility study regarding the direct laser engraving of Intaglio printing-plates. Results of our studies on laser optics and choice of material to achieve optimal line quality are presented. In our studies we have found a novel plate material superior to galvanic nickel regarding plate lengthening and have achieved line widths in the 10μm range. The process found, allows reintroducing true three-dimensional elements with line-depth and -profiling control independent of line-width, while decreasing lead-times in the production of security documents. We give a comparison between direct laser engraving and traditional platemaking, comparing aspects such as resolution, plate performance and production time.

Citation Download Citation

Harald Deinhammer, Franz Loos, Daniel Schwarzbach, and Peter Fajmann "Direct laser engraving of intaglio printing plates", Proc. SPIE 5310, Optical Security and Counterfeit Deterrence Techniques V, (3 June 2004); https://doi.org/10.1117/12.526899

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