A1 Journal article (refereed), original research

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


Publication Details

Authors: Myllys Marko, Häkkänen Heikki, Korppi-Tommola Jouko, Backfolk Kaj, Sirviö Petri, Timonen Jussi

Publication year: 2015

Language: English

Related journal or series: Journal of Applied Physics

Volume number: 117

Issue number: 14

JUFO level of this publication: 1

Open Access: Not an Open Access publication


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


Last updated on 2017-22-03 at 13:59