The Model of Intaglio Ink Relief Forming

Тетяна Юріївна Киричок

Abstract


The object of the study was to ascertain the mechanism of intaglio relief forming. The technological features of intaglio printing cause ink relief forming which in accordance with the proposed model consists of a ink layer, under ink relief, and areas of vertical and horizontal ink penetration into substrate. Ink relief forming is a result of the combined action of the high pressure in the printed nip (1,000 kN/m) which is applied slightly differently to different areas of the paper, and increased up to 80–82 °C the temperature of ink on the plate cylinder. The model is experimentally corroborated by microscopic examination of intaglio printed paper cuts with zoom in x100–1000. It was defined the shape of the intaglio ink relief parts, their position on the surface and in the volume of the banknote substrate, and the dependence of their parameters on technological factors. Height of the under ink relief is 10–20 μm (for tested size of engraved recesses) or 40–60 % of the total height of the intaglio ink relief. The ink penetration depth into substrate is 8.0–24.3 μm, lateral ink penetration is 8.0–18.3 μm. Increasing the pressure of the intaglio printing nip increases the depth and lateral ink penetration into banknote substrate. Lateral ink penetration into the paper increases with increasing of paper sizing and decreasing of ink viscosity.

Keywords


Banknote; Banknote production; Intaglio printing; Steel engraving; Printing nip; Ink relief; Printing area; Non-printing area; Engraved recess

References


V. Ciaramella, “Intaglio printing”, Billetaria: Int. Rev. Cash Management, is. 2, pp. 19–20, 2007.

Interpol Resolution no. AGN/67/RES/11: Proc. Currency Counterfeiting 9th Int. Conf., the ICPO-Interpol General Assembly, 67th session, Cairo, Egypt, October 22–27, 1998 [Online]. Available: http:www.interpol.int

R.L. van Renesse, Optical document security, 3rd ed. Bos­ton, London: Artech House, 2005, 368 p.

Т. Kyrychok et al., “The influence of pressure during intaglio printing on banknotes durability”, Mechanika, vol. 20, no. 3, pp. 327–331, 2014.

Киричок Т.Ю., Гуща О.В. Вплив металографічного друку на міцнісні характеристики банкнотного паперу // Технологія і техніка друкарства. – 2012. – № 2. – С. 4–10.

H. Holik, Handbook of paper and board. Wiley-VCH, 2006, 505 p.

А. Fukuura, “Intaglio printing ink”, US Pat. 20120199029 A1, declared date Oct. 8, 2010, issued date Aug. 9, 2012.

Т. Crane, “Some observation on technological developments in durable substrates”, Billetaria: Int. Rev. Cash Management, is. 9, pp. 8–9, 2011.

O. Gray, “The Art and Science of Intaglio – the Cornerstone of Security Printing”, Currency News, vol. 3, no. 2, pp. 8–9, 2005.

Дослідження зміни характеристик зразків банкнот під час імітації зношування / Т.Ю. Киричок, В.М. Нестеренко, Є.Г. Сухіна, О.В. Гуща // Технологія і техніка друкарства. – 2012. – № 4. – С. 4–25.

Моделювання проникнення фарби в папір з водяними знаками під час офсетного друку / Т.Ю. Киричок, Н.Л. Талімонова, В.І. Заріцька, А.І. Денисюк // Наукові вісті НТУУ “КПІ”. – 2012. – № 5. – С. 135–139.


GOST Style Citations


 

 





DOI: https://doi.org/10.20535/1810-0546.2015.1.90953

Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 NTUU KPI