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TAPPI Coating Conference 2002 PRODUCTION OF A SINGLE COATED GLOSSY INKJET PAPER USING CONVENTIONAL
 

Summary: TAPPI Coating Conference 2002
PRODUCTION OF A SINGLE COATED GLOSSY INKJET PAPER USING CONVENTIONAL
COATING AND CALENDERING METHODS
Hyun-Kook Lee, Margaret K. Joyce,
Paul D. Fleming, and John H. Cameron
Western Michigan University
Department of Paper and Imaging Science and Engineering
Kalamazoo, Michigan 49008
ABSTRACT
The unique structure of precipitated and gelled silicas provides an internal and packing porosity that enables the
rapid diffusion of liquid inks into the coating layer. The rapid uptake of the ink immobilizes the anionic dyes at the
surface of the coating, allowing high optical print densities to be achieved. However, precipitated and gelled silicas
are primarily used in matte grades since the particle size of them is typically 3-16 Ám range.
This study focused on the use of non-porous fumed silicas and alumina in glossy inkjet media. The coating process
was a single coat blade application on a cylindrical lab coater (CLC) at speeds up to 920 m/min. The use of fumed
alumina enabled gloss values of almost 70% to be achieved after 3 passes through a sheet fed soft nip calender at 60
o
C and 123 kN/m. The work is significant because it demonstrates the ability to produce glossy inkjet coated papers
by applying a single pigmented coating layer on a blade coater and finishing with a soft nip calender. The research
described herein examines the contribution of coating structure influences on inkjet print quality. The pigments

  

Source: Abubakr, Said - Department of Paper Engineering, Chemical Engineering, and Imaging, Western Michigan University

 

Collections: Engineering