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In Press Conditions and its Effect on Runnability and Convertability in Digital Package Printing
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (DPC - Digital printing center)
2005 (English)In: Packaging Technology and Science, ISSN 0894-3214, Vol. 18, no 4, 189-197 p.Article in journal (Refereed) Published
Abstract [en]

A major advantage of digital printing is that printing can be performed ondemand, but as all printing techniques it suffers from its specific runnability problems. This study reports on an investigation of problems during printing and how to improve the runnability, with the aim of pointing out the most critical factors. Test printing has been performed on three different paperboard types in digital print units based on both dry and liquid toner electrophotographic technology. Results show that the three main problems during printing were; feeding in sheet fed print units, cutting in web fed print units and increasing curl after printing. Feeding problems in sheet fed print units were mainly explained by curl and varying format size of the paperboard, but also by exceeding thicknesses limits for the press. Curl after printing principally occurred due to high temperature loads caused by, for example, fusing and conditioning.

Place, publisher, year, edition, pages
2005. Vol. 18, no 4, 189-197 p.
Keyword [en]
Digital Printing, Paperboard, Runnability, Improvements
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-3701DOI: 10.1002/pts.690ISI: 000231366800004Local ID: 3830OAI: oai:DiVA.org:miun-3701DiVA: diva2:28733
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-04-06Bibliographically approved
In thesis
1. Critical Factors for digital Printing on Paperboard: Runnability, Functionality & Print Quality
Open this publication in new window or tab >>Critical Factors for digital Printing on Paperboard: Runnability, Functionality & Print Quality
2004 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

More than ten years ago, the first digital print units were introduced on the market and since then, the technology has developed rapidly. Digital printing on packaging material is, however, a rather new area, but a probable prediction is that there soon will be a market need for board products that can be used for digital printing. In order to become successful in digital packaging printing it is, however, important to gain knowledge about the interaction between the substrate and the press, when it comes to runnability, functionality and print quality. Test printing was performed on paperboard, in digital print units based on both dry and liquid toner electrophotographic technology. Print quality was mainly investigated with subjective evaluation. Regarding functionality, investigation of taste and odor,creasing, toner adhesion and stability of whiteness in digital printed paperboard were performed. The runnability was investigated by subjective observances during printing trials, but also additive mesaurements. The subjective print quality evaluation indicated that paperboard, successfully could be used within digital printing in the same extent as paper grades. The differences in print quality were mainly explained with different characteristics of the paperboard i.e. if the paperboard, for example,had initial unevenness, high roughness or higher moisture content. However, the print units and their settings, also, played an important role. The functionality studies mainly showed a positive result, but regarding toner adhesion some problems occurred in the liquid toner technology. Furthermore, the three main problems concerning runnability were; feeding in sheet fed print units, cutting in web fed print units and increasing curl or non-flatness after printing.

Place, publisher, year, edition, pages
Linköping University, 2004
Series
Linköping studies in science and technology. Licentiate thesis, ISSN 0280-7971 ; 1141
Keyword
Digital printing, paperboard, electrophotography
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-5732 (URN)3836 (Local ID)91-85295-11-6 (ISBN)3836 (Archive number)3836 (OAI)
Presentation
(English)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-04-06Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf