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Self-Stabilizing Carbon Blacks: The Technological Advantages of Aqueous Ink Jet Systems

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New chemical modification processes make it possible to introduce hydrophilic structures to the surface of pigment carbon blacks (pigment CBs). The modification can be done via cyclo additions or radical reactions, for example.

One potential application field for surface-modified pigment CBs is inkjet. The proportion of pigments inkjet inks will steadily grow. Especially self-stabilizing materials satisfy the high demands of this sophisticated technology.

This paper describes comparative analyses between conventional pigment CBs, their physical modification with the aid of polymers, and chemically modified pigment CBs with their wetting-agent free inks. Both pigment properties and ink properties were investigated. To clarify the differences of the pigments EDX-spectra coupled with electron-microscopy was an important method. Dispersion properties were characterized via the zeta-potential, the viscosity, the surface tension, and the particle size distribution of the CB in the dispersion. The results illustrate the benefits of the surface-modified pigment CBs developed by Degussa. In addition to the above-mentioned methods, the inks were tested in brand-name conventional SOHO printers. The dispersant free inks showed superior results with established bubble-jet print heads because the product properties of the surface modified pigment CBs were chemically fine tuned and the ink formulation was simplified.
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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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