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Influence of Pigment Particles on Gloss and Printability for Inkjet Paper Coatings

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Previously, we have shown that coatings formulated with fumed silica pigments are capable of producing glossy inkjet media, despite the presence of these coating cracks, caused by shrinkage of the coating layer. However, their high cost and the inability to run them at high solids (>30% solids) limits their commercial application. Raising the coating solids with the addition of conventional pigments reduces the amount of shrinkage that occurs during drying, and thereby reduces the coating cracks, improving the final gloss of the coating layer.

In this research, the solids of fumed silica coating systems were increased by adding co-pigments of different particle sizes. Fumed silica was used as the main pigment and precipitated calcium carbonate (PCC) and ultra fine ground calcium carbonate (UFGCC) were used as co-pigments. The ratio of fumed silica to co-pigments were 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 0:100. These blends of pigments were previously shown to produce high gloss and good printability. The coatings were applied using Meyer rods to obtain a coat weight of 10g/m2 on one side. The optical brightness, printability, ink density, and ink gloss were compared. Based on the findings, it is concluded that the co-pigment systems had optical properties and printing qualities as good as the mono pigment coatings.
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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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