<title>Surface structure analysis of paper based on confocal laser scanning microscopy (CLSM) imaging: aiming at the prediction of printability for wood-containing paper</title>

Abstract

The printability of newsprint and liner (the outer structure of corrugated board) is addressed through the analysis of CLSM (confocal laser scanning microscope) images. The surface topography and porous structure (void volume) of the paper are physical properties heavily correleated with the paper's formation, and, hence, important factors affecting the printability of the paper. The surface 3-D structure ofthe paper is measuerd by using topographic CLSM images from which the pore size distribution can be estimated using image analysis. The experimental results have both been compared to a theoretical model ofthe crossectional area ofvoid volumes in paper and also with paper physics measurements, specially related to the offset print-through problem. Good correleations have been found, and results so far are promising, but still there is a need for improved analysis ofthe 3-D structure ofpaper, both on the measurement and modelling side.

A New Slice-based Concept for 3D Paper Structure Analysis Applied to Spatial Coating Layer Formation

“…Auran et al [5] used the CLSM to measure the three dimensional surface structures of wood containing paper samples. In addition the pore size distribution was estimated.…”