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Polymer Stabilized Pigment Dispersions for High Reliability Ink-Jet Printing

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Due to their excellent water and fade resistance properties and their low environmental impact, aqueous pigment dispersions are of growing importance in emerging high throughput aqueous ink jet markets. However, the physical durability (abrasion resistance) of pigment-based inks is often poor. In this paper we describe how dispersing pigments with polymeric dispersants enables significant advantages in abrasion resistance, whilst also delivering stable dispersions across the wide range of ink formulations required to print reliably at high speed, and rapid coagulation on a wide range of substrates. We show that to achieve stability it is essential to irreversibly anchor the dispersant to the pigment surface, and then provide the appropriate balance of electrostatic and steric inter-particle interaction in order to prevent particle aggregation in the ink. We show how these challenges can be met with a new type of pigment dispersion based on Reactive Dispersant technology.
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Document Type: Research Article

Publication date: 2011-01-01

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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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