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Drop Placement Error Analysis for Ink Jet Deposition

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Most industrial and commercial applications for materials deposition in a digital format call for a high degree of accuracy to satisfy the output requirements. Ink jet deposition has the potential to meet the requirements by delivering a consistent volume at a precise location in time and space. Currently available ink jet print heads employ multiple jets to enhance throughput and either the print head or the substrate is scanned relative to the other to complete the desired coverage. The timing and order of initiating jet channel firing is controlled by electronics and software, however, differences in flight time of the drops from the nozzle exit to the substrate can result in significant drop placement error. The difference in flight time is due to manufacturing tolerances that include channel-to-channel differences in print head geometry, materials, and drive electronics. A set of dimensionless parameters has been developed that describe drop placement error based on theoretical input as well as experimental data. Using a drop ejection visualization system, it is possible to measure drop flight time and other parameters that characterize the jetting behavior under realistic conditions. Theoretical calculations and experimental results for predicting the drop placement error due to the print head will be presented.
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Document Type: Research Article

Publication date: 2006-01-01

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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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