The role of ink component diffusion during absorption into inkjet coatings (original) (raw)

Abstract

TAPPI 11th Advanced Coating Fundamentals Symposium: The Latest Advances in Coating Research and Development. Munich, Germany, 11-13 Oct. 2010, 195-214 Inkjet coatings usually contain specialty pigments with a high specific surface area and binders which provide high binding force. The final coating structure has a high pore volume and it contains a high frequency of fine diameter pores together with large pore volume capacity. During the inkjet ink absorption process, the capillary and permeation flow drives the liquid into the coating structure and controls volume flow, respectively. However, the role of diffusion within the timescale of the inkjet ink imbibition process has not been studied widely. The aim of this work is to clarify the interactive role of the porous structure and the coexistent swelling of binder during the liquid imbibition, with special attention to the fixation of dye and its distribution. The impact of polarity of the vehicle was studied using compressed pigm...

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