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Jet Flows of Amorphous Borate Esters for Ink Jet Printing

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Solid ink jets are used in printers. Invariably, solid ink jets are crystalline materials, which under go dramatic change in modulus in moving from solid to liquid state. During jetting, flow instability can occur depending on jet velocity, viscosity, surface tension and elasticity of the fluid. Satellite formation can occur when Weber number is high. The flow can range from dripping to jetting depending on the flow rate. A high Weisenberg number can lead to die swell or melt fracture in a jet flow.

In contrast to crystalline solid ink jet material, we are proposing the use an amorphous material, a borate polyester which exhibits an exponential decrease in viscosity on heating and is miscible with small molecular, semi-crystalline diluents enabling fine tuning of viscosity and temperature that a specific composition transitions from solid to liquid state. Specific rheological characteristics can be engineered by the nature of alcohals or glycols that are reacted with boric acid and by making mixtures of the various borate esters,
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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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