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In Situ Measurement of Instantaneous Jetting Speed Curve

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The jetting speed of an inkjet droplet from an inkjet head has been measured, and is widely used in industry to improve jetting performance. The measured jetting speed is used to control the inkjet head by modifying the driving waveform voltage. In jetting speed measurements, the travel distances of an inkjet droplet during two pre-defined timings are used. However, the jetting speed varies significantly during drop formation. If there is a ligament or satellite, the jetting speed is significantly affected. Thus, measured jetting speed using the current methods can differ according to the selection of the two timings. We proposed an instantaneous jetting speed curve to overcome the shortcomings of previous techniques. By determining the instantaneous jetting speed curve, we can understand jetting speed variation during drop formation. Also, the relative jetting speed of satellites with respect to the main droplet during drop formation can be using the proposed approach.
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Document Type: Research Article

Publication date: 2010-01-01

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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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