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

Authors :
Heikki Häkkänen
Jussi Timonen
Kaj Backfolk
Petri Sirviö
Markko Myllys
Jouko Korppi-Tommola
Source :
Journal of Applied Physics. 117:144902
Publication Year :
2015
Publisher :
AIP Publishing, 2015.

Abstract

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.

Details

ISSN :
10897550 and 00218979
Volume :
117
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi.dedup.....7b2b76cfd302df890d0b4b92f547283e
Full Text :
https://doi.org/10.1063/1.4916588