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Title: X-ray microtomography and laser ablation in the analysis of ink distribution in coated paper

A novel method was developed for studying the ink-paper interface and the structural variations of a deposited layer of ink. Combining high-resolution x-ray tomography with laser ablation, the depth profile of ink (toner), i.e., its varying thickness, could be determined in a paper substrate. X-ray tomography was used to produce the 3D structure of paper with about 1 μm spatial resolution. Laser ablation combined with optical imaging was used to produce the 3D structure of the printed layer of ink on top of that paper with about 70 nm depth resolution. Ablation depth was calibrated with an optical profilometer. It can be concluded that a toner layer on a light-weight-coated paper substrate was strongly perturbed by protruding fibers of the base paper. Such fibers together with the surface topography of the base paper seem to be the major factors that control the leveling of toner and its penetration into a thinly coated paper substrate.
Authors:
 [1] ; ;  [2] ;  [3] ;  [4] ;  [3] ;  [1] ;  [5]
  1. Department of Physics and Nanoscience Center, University of Jyvaskyla, P.O. Box 35, FI-40014 Jyvaskyla (Finland)
  2. Department of Chemistry and Nanoscience Center, University of Jyvaskyla, P.O. Box 35, FI-40014 Jyvaskyla (Finland)
  3. Imatra Research Centre, Stora Enso Oyj, Tainionkoskentie 115, 55800 Imatra (Finland)
  4. (Finland)
  5. (Russian Federation)
Publication Date:
OSTI Identifier:
22402847
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 14; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABLATION; DEPTH; FIBERS; INKS; INTERFACES; LASERS; LAYERS; SPATIAL RESOLUTION; SUBSTRATES; SURFACES; TOMOGRAPHY; TOPOGRAPHY; VARIATIONS; VISIBLE RADIATION; X RADIATION