Influence of gravure process on ink lifting efficiency

Soile Passoja, Asko Sneck, Yingfeng Shen, Jorma Koskinen, Robert Roozeman

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Electrostatic assistance (ESA) lifts gravure ink from the engraved cells before actual nip contact. This improves ink transfer. In this work the influence of ESA on ink lifting speed and height was examined with both electromechanically engraved and laser etched cells using numerical simulation and experimental studies. Ink lifting occurs quite similarly from both cell types: without ESA ink stays in the cells until the physical ink-substrate contact in the nip is formed. With ESA ring shaped ink lifting near the cell edges is noted before the nip contact. This leads to a doughnut shape contact area in the nip. Higher ESA levels lead to faster ink lifting and stronger ring shaped ink lifting in the cells. Ink lifting occurs faster from U cells than from V cells when the cells are having the same diameter and depth. This however means different ink volume in the cells. The cell geometry affects the shape of the printed dots: even and round dots are printed with cells having flat bottom. This nearly constant depth of the cell provides equally distributed ink in the cell offering also more even ink transfer.
Original languageEnglish
Title of host publicationAdvances in Printing and Media Technology
Subtitle of host publicationProceedings of the 37th International Research Conference of iarigai
PublisherIARIGAI - International Association of Research Organizations for the Printing, Information and Communication Industries
Pages283-290
VolumeXXXVII
ISBN (Electronic)978-3-9870704-5-7
ISBN (Print)978-3-9812705-2-6
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
Event37th International Research Conference of iarigai - Montreal, Canada
Duration: 12 Sep 201015 Sep 2010

Conference

Conference37th International Research Conference of iarigai
CountryCanada
CityMontreal
Period12/09/1015/09/10

Fingerprint

inks
cells
electrostatics
rings
guy wires

Keywords

  • gravure printing
  • electrostatic assistance
  • cell geometry
  • ink lifting

Cite this

Passoja, S., Sneck, A., Shen, Y., Koskinen, J., & Roozeman, R. (2010). Influence of gravure process on ink lifting efficiency. In Advances in Printing and Media Technology: Proceedings of the 37th International Research Conference of iarigai (Vol. XXXVII, pp. 283-290). IARIGAI - International Association of Research Organizations for the Printing, Information and Communication Industries.
Passoja, Soile ; Sneck, Asko ; Shen, Yingfeng ; Koskinen, Jorma ; Roozeman, Robert. / Influence of gravure process on ink lifting efficiency. Advances in Printing and Media Technology: Proceedings of the 37th International Research Conference of iarigai . Vol. XXXVII IARIGAI - International Association of Research Organizations for the Printing, Information and Communication Industries, 2010. pp. 283-290
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title = "Influence of gravure process on ink lifting efficiency",
abstract = "Electrostatic assistance (ESA) lifts gravure ink from the engraved cells before actual nip contact. This improves ink transfer. In this work the influence of ESA on ink lifting speed and height was examined with both electromechanically engraved and laser etched cells using numerical simulation and experimental studies. Ink lifting occurs quite similarly from both cell types: without ESA ink stays in the cells until the physical ink-substrate contact in the nip is formed. With ESA ring shaped ink lifting near the cell edges is noted before the nip contact. This leads to a doughnut shape contact area in the nip. Higher ESA levels lead to faster ink lifting and stronger ring shaped ink lifting in the cells. Ink lifting occurs faster from U cells than from V cells when the cells are having the same diameter and depth. This however means different ink volume in the cells. The cell geometry affects the shape of the printed dots: even and round dots are printed with cells having flat bottom. This nearly constant depth of the cell provides equally distributed ink in the cell offering also more even ink transfer.",
keywords = "gravure printing, electrostatic assistance, cell geometry, ink lifting",
author = "Soile Passoja and Asko Sneck and Yingfeng Shen and Jorma Koskinen and Robert Roozeman",
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Passoja, S, Sneck, A, Shen, Y, Koskinen, J & Roozeman, R 2010, Influence of gravure process on ink lifting efficiency. in Advances in Printing and Media Technology: Proceedings of the 37th International Research Conference of iarigai . vol. XXXVII, IARIGAI - International Association of Research Organizations for the Printing, Information and Communication Industries, pp. 283-290, 37th International Research Conference of iarigai, Montreal, Canada, 12/09/10.

Influence of gravure process on ink lifting efficiency. / Passoja, Soile; Sneck, Asko; Shen, Yingfeng; Koskinen, Jorma; Roozeman, Robert.

Advances in Printing and Media Technology: Proceedings of the 37th International Research Conference of iarigai . Vol. XXXVII IARIGAI - International Association of Research Organizations for the Printing, Information and Communication Industries, 2010. p. 283-290.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - Electrostatic assistance (ESA) lifts gravure ink from the engraved cells before actual nip contact. This improves ink transfer. In this work the influence of ESA on ink lifting speed and height was examined with both electromechanically engraved and laser etched cells using numerical simulation and experimental studies. Ink lifting occurs quite similarly from both cell types: without ESA ink stays in the cells until the physical ink-substrate contact in the nip is formed. With ESA ring shaped ink lifting near the cell edges is noted before the nip contact. This leads to a doughnut shape contact area in the nip. Higher ESA levels lead to faster ink lifting and stronger ring shaped ink lifting in the cells. Ink lifting occurs faster from U cells than from V cells when the cells are having the same diameter and depth. This however means different ink volume in the cells. The cell geometry affects the shape of the printed dots: even and round dots are printed with cells having flat bottom. This nearly constant depth of the cell provides equally distributed ink in the cell offering also more even ink transfer.

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Passoja S, Sneck A, Shen Y, Koskinen J, Roozeman R. Influence of gravure process on ink lifting efficiency. In Advances in Printing and Media Technology: Proceedings of the 37th International Research Conference of iarigai . Vol. XXXVII. IARIGAI - International Association of Research Organizations for the Printing, Information and Communication Industries. 2010. p. 283-290