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A large-scale print-head for drop-on-demand and continuous ink jet studies

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A simple large-scale experimental apparatus that is capable of reproducing the jetting conditions found either in drop-ondemand (DoD) or continuous ink jet (CIJ) print-heads is presented. The design allows the direct observation of phenomena and measurement of conditions that are difficult or even impossible to record or modify in commercially available printheads. In the DoD mode, the setup permits the observation of the meniscus motion as well as recording of the pressure pulse in the fluid inside the print-head. Backlit imaging has been used to determine the drop speed, number of satellites and droplet behaviour. In the CIJ case, the setup allows the direct measurement of the jetting pressure and the modulation amplitude in the fluid inside the print-head. These characteristics allow the determination of the break-up curve for modulated jets in terms of the pressure modulation amplitude and the modulation frequency. Measurements from this system can readily be compared with outputs from theoretical models or numerical simulations, as parameters such as speed and pressure are directly measured.
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Document Type: Research Article

Publication date: 2009-01-01

More about this publication?
  • 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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