Change search
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
Wetting and levelling of toner during fusing of electrophotographic prints
KTH, Superseded Departments, Chemistry.ORCID iD: 0000-0002-5444-7276
2004 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

This licentiate thesis comprises two studies dealing withthe fusing step in electrophotographic printing. The firststudy addresses the development of a method for monitoringwetting/spreading of single toner particles in-situ on a heatedsubstrate. The method employs imaging from above and thus makesit possible to use toner particles of realistic size (around 10µm in this case). The results of this first study clearlyshow that high energy substrates not only exhibit far greatertoner particle spreading, and work of adhesion generated by it,but also a strong dependence on the toner type. For the Xeikontoners used the cyan and black spread far more than themagenta, with yellow clearly the lowest. Conversely, low energysubstrates exhibit limited spreading and lack of sensitivity totoner type. The results permitted the proposal of a simplegeneralised law to describe thespreading kinetics. Thisempirical relation was able to fit all experimental resultswith the bare minimum of input information from the equilibriumstate. The method provides a readily visualisable and flexiblemeans for more systematic design of toner-substrateinteractions in electrophotography. A broad range of differenttoner particles can be rapidly screened in contact with modeland real substrates, and the spreading then correlated toelectrophotographic runnability, print quality and durabilityissues.

The second study is based on evaluation of print qualityfrom trials on a Xeikon digital press with varying fusingconditions. The study illustrated the utility of white-lightinterferometric profilometry in quantifying the thickness andsurface roughness spectrum of toner layers transferred andfused on two different paper substrates (coated and uncoated).These measurements generate increased insight into themechanisms giving rise to toner print quality. Significantdifferences in surface roughness behaviour were observedbetween different toner colour combinations as a function oftemperature settings and both paper type and fusing units(radiant and heated roll). The correlation between gloss andprint surface roughness at micron length scales extends tolonger length scales with increasing toner film thickness andon use of the heated roll glossing unit. These observationsfacilitate a more systematic approach to designing fusing unitsto avoid typical problems such as gloss variations inelectrophotographic prints.

Place, publisher, year, edition, pages
Stockholm: Kemi , 2004. , vii, 38 p.
Series
Trita-YTK, ISSN 1650-0490 ; 0404
Identifiers
URN: urn:nbn:se:kth:diva-1821ISBN: 91-7283-859-0 (print)OAI: oai:DiVA.org:kth-1821DiVA: diva2:7833
Available from: 2004-09-20 Created: 2004-09-20 Last updated: 2012-03-21

Open Access in DiVA

fulltext(6143 kB)1001 downloads
File information
File name FULLTEXT01.pdfFile size 6143 kBChecksum MD5
fc05d12a363a7220079e57db42e44ec150d76a39b79cc81d8ee54d6dbe22999628ea2f38
Type fulltextMimetype application/pdf

Authority records BETA

Pettersson, Torbjörn

Search in DiVA

By author/editor
Pettersson, Torbjörn
By organisation
Chemistry

Search outside of DiVA

GoogleGoogle Scholar
Total: 1001 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 1909 hits
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