3D light interferometry investigation of ink layer formation during intaglio printing

Tetiana Kyrychok; Olena Korotenko

doi:10.1117/12.2553475

6 February 2020 3D light interferometry investigation of ink layer formation during intaglio printing

Tetiana Kyrychok, Olena Korotenko

Proceedings Volume 11369, Fourteenth International Conference on Correlation Optics; 1136910 (2020) https://doi.org/10.1117/12.2553475
Event: Fourteenth International Conference on Correlation Optics, 2019, Chernivtsi, Ukraine

Abstract

The intaglio printing is a security process and one of the obligatory ways to protect banknotes and other types of securities in majority of the world countries. One of distinguishing features of the intaglio printing process is that ink layer thickness transferred to substrate can be varied from 20 up to 200 μm. The aim of the investigation is to ascertain the correlation between ink layer formation and technological parameters of the intaglio printing process and to establish the best ink transferring condition. The designed and manufactured by the technology of direct laser engraving (DLE) model printing plate with various geometrical parameters of engraved printing elements. The samples surface topography was investigated using contact profiling and non-contact 3D light interferometry methods in combination. The resulting 2D images allow to get a 3D reconstruction of the surface. The average layer thickness values of printed strokes is about 21 μm using the SWA of engraved printing elements angle Kw=53°, while this value is about 29 μm using the sidewall angle of engraved printing elements angle Kw=90°. 3D light interferometry profiling made possible to prove and visible nonsymmetrical view of intaglio ink layers. It was observed that when the SWA of engraved printing elements increase the values of contact angles is increasing too – from 43° to 47° (left contact angle) and from 32° to 35° (right contact angle).

Citation Download Citation

Tetiana Kyrychok and Olena Korotenko "3D light interferometry investigation of ink layer formation during intaglio printing", Proc. SPIE 11369, Fourteenth International Conference on Correlation Optics, 1136910 (6 February 2020); https://doi.org/10.1117/12.2553475

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