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Effect of Ink Drop Coalescence on Print Quality in Solid Ink Printing

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In ink jet printing, coalescence of separately deposited drops can occur on some media surfaces. These drops will move towards one another or combine into larger drops. The coalescence of these drops can degrade the print quality. Coalescence has been described with a 3-parameter model by fitting the parameters to microscopic measurement of the drop motion. In this work, we incorporate this 3-parameter model into a solid ink printer simulation and examine the impact of coalescence on print quality. We find that coalescence causes “pairing” of the pixel columns in the cross-process direction (perpendicular to direction of paper travel) and line breaks in the process direction. For streaks that are caused by the interlacing process, coalescence also further degrades the streaking appearance. We will provide possible physical explanations to drop coalescence and how it can be minimized resulting in improved print quality.
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Document Type: Research Article

Publication date: 2004-01-01

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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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