%0 Journal Article %T New Silica Coating Pigment for Inkjet Papers from Mining Industry Sidestreams %A Taina Lamminm£¿ki %A Eija Kentt£¿ %A Hille Rautkoski %A John Bach¨¦r %A Sebastian Teir %A John Kettle %A Juha Sarlin %J Journal of Surface Engineered Materials and Advanced Technology %P 224-234 %@ 2161-489X %D 2013 %I Scientific Research Publishing %R 10.4236/jsemat.2013.33030 %X

Silica is commonly used as an ingredient in the coatings of inkjet papers because of its capability to provide a coating layer structure combining a high pore volume, into which all the applied inkjet ink can transfer, and a suitable pore size distribution for very quick ink absorption. Nowadays, the production of silica pigment is quite expensive, and therefore, it would be advantageous to find a cheaper raw material source. In this study, the raw material was Greek olivine from magnesite mine sidestreams. The silica pigment was produced at laboratory scale by using nitric acid as a solvent. The target of this work was to clarify how this produced silica pigment is suited for inkjet coating pigments. The coating colors were applied by a laboratory rod coater on fine base paper and white-top kraftliner, and the coated surfaces were printed with a home and office area inkjet printer. The results showed that the produced olivine-based silica pigment has a potential in matt inkjet coatings. The coating of the produced silica pigment increased the print density, decreased the print-through, and diminished the bleeding of fine paper and white-top kraftliner board. However, further development work is needed to improve the pigment brightness to a more acceptable level, and to control the particle size at the nitric acid dissolution.

%K Silica %K Coating Pigment %K Inkjet Printing %K Print Quality %K Ink Penetration %K Ionic Charge %K Dye Transfer Process %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=34488