Detection of local specular gloss and surface roughness from black prints

Mikko Juuti*, Tuukka Prykäri, Erkki Antero Alarousu, Hanna Koivula, Markko Myllys, Arto Lähteelä, Martti Toivakka, Jussi Timonen, Risto Myllylä, Kai Erik Peiponen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

A combination of optical and tomographic imaging techniques for inspection of local surface roughness and specular gloss of black prints and coated paper are introduced. A diffractive optical-element-based glossmeter (DOG) and a low-coherence interferometer (LCI) were used to obtain local information about the print in terms of topographic and gloss maps. X-ray microcomputed tomography (μCT) was used to obtain 3D local structural information of the coated paper. Gloss and topographic maps were used to determine statistical gloss and roughness parameters. These parameters were useful when analysing the surface condition of prints and coated paper. We found an orientation-dependent gloss slope, which reflects the fact that gloss does not depend on the surface roughness alone. Slope parameters turned out to be particularly sensitive to surface properties.

Original languageEnglish (US)
Pages (from-to)101-108
Number of pages8
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume299
Issue number1-3
DOIs
StatePublished - May 15 2007

Keywords

  • Gloss
  • Glossmeter
  • Low-coherence interferometer
  • Paper
  • Print
  • Surface roughness
  • Surface topography
  • X-ray micro-computed tomography

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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