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Tailor-Made Silica and Alumina for Inkjet Media Coatings

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The optical properties and printability of modern, microporous inkjet media is strongly controlled by the type of the pigments used inside the coating. It is well known that coatings based only on commodity pigments like clay or calcium carbonate cannot meet today's requirements. The use of amorphous, synthetic silica or alumina is not only setting the limits of conventional coatings, but is also making functional high performance pigments the key to meeting current and future requirements. These modern materials provide special pore structures and surfaces for the adsorption of dyes and/or color pigments resulting in properties like excellent image density, outstanding resolution and instant drying.

This paper gives an overview over the physicalchemical properties of special synthetic pigments and their relation to the parameters of the coating process and the resulting optical properties of the media. Such aspects as the pigment composition (silica, alumina, mixed oxides), the pigment formation process (fumed, precipitated), the particle size and structure, the dispersion process and the formation of the coating formulation are correlated with media properties like gloss, ink adsorption, and image quality.
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Document Type: Research Article

Publication date: 2004-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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