Image Quality and Surface Tension of Digital UV Curable Inks
Abstract:Surface tension of a digital ink can affect substrate wetting, print resolution and jet stability. Digital printing with UV curable inks is a dynamic process involving droplet formation/ejection, substrate wetting and UV cure, which occurs on the order of milliseconds. Dynamic surface tension (DST) measurements can provide information in 10 to 1000 millisecond timeframe. This paper will focus on the effect of surfactant type and concentration on print image quality. Surface tension difference between the substrate and ink was found to affect drop size and image quality. This difference for various substrates places constraints in providing good image quality with a single ink on all substrates. Information from DST measurements can be used to match ink and substrate surface tension. This helps an ink formulator to choose the optimum ink to provide the effective image quality to end user.
Document Type: Research Article
Publication date: 2008-01-01
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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