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Inkjet status monitoring using meniscus measurement

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Meniscus motion measurement techniques have been developed such that the jetting condition in a piezo inkjet head can be monitored. Acquired CCD camera images, where a strobe light from an LED (Light Emitting Diode) was synchronized by the jetting signal, were used to measure the meniscus motion. For efficient image processing of the acquired images, a straight line near the nozzle in the jetting direction was used for defining the ROI (Region of Interest). Then, the meniscus location can be identified from the discontinuity that exists in the pixel intensities along the ROI in the image. Finally, it was shown from the experimental results that the measured meniscus can predict jetting behavior without actual jetting.
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Document Type: Research Article

Publication date: 2008-01-01

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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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