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Silica Nanoparticles: Design Considerations for Transparent and Glossy Inkjet Coatings

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Inkjet technology is finding utility in a variety of applications ranging from advertising, packaging, proofing, and the in-home printing of photographs. In many applications transparency of the inkjet coating is a critical parameter. Transparent media is widely used for graphic displays, window advertisements, and backlit applications. Ink receptive transparent coatings are also critical in glossy photographic media, especially transparency of the topcoat in multiple layer architectures. A transparent and glossy top layer is highly desirable and in most cases clarity correlates with gloss. It is generally accepted that a high degree of topcoat transparency translates to high printed color optical density.

Silica nanoparticles are used in highly pigmented topcoats to create a porous structure, which traps the colored elements of the ink and lets the carrier liquid pass through to the underlying absorptive layer. In some cases nanoparticles are used in clear films to improve its mechanical properties.

This paper describes two studies. Study I investigated the impact of the properties of silica nanoparticles on the clarity, gloss and printability of inkjet coating films. An experimental design was used to evaluate silica nanoparticles in combination with various binders. In Study II we explored the impact of acetoacetylated polyvinyl alcohols combined with different silicas on the transparency and gloss of the film.
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Document Type: Research Article

Publication date: 2005-01-01

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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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