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Flow Stability in Liquid Inkjets Printers

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The production of ink-jet inks is a two stage process. First, the pigment is dispersed in an appropriate mobile phase using a mechanical stirrer. This ensures that any lumps of pigment powder are dispersed. This “pre-mix” sample is then milled using a ballmill in order to reduce the particle size and cause the break-up of any strongly bound aggregates.

Dilute polymer solutions at flow rates corresponding to a transition from dripping to jetting. Thermal inkjet process can be analyzed by considering dynamics of capillary flow, capillary thinning and break-up process in low viscous and low viscosity elastic fluids such as dilute polymer solutions. The relative importance of three time scales inertial, viscous and elastic processes and length scales, initial sample size and the total stretch imposed on the sample govern stability of inkjets. Viscosity, relaxation modulus and surface tension are used to analyze stability of inkjet flows of viscous and viscoelasic fluids from glycol, polyethylene oxide, carbon black and borate esters.
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Document Type: Research Article

Publication date: 2009-01-01

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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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