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Using Perturbed and Asymmetric Microflow Architectures to Statistically Clarify Droplet-Ejected Deflection in Picoliter and High-Frequency Inkjet

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Currently a lot of experienced efforts for inkjet printing were paid to promote the print quality with high-density nozzles (>/= 600 nozzles per inch, npi) and little droplet (<10 picoliter, pL) since the inkjet can approach the photographic printing. In addition of promoting resolution, an accurate directionality of droplets ejected and flying vertically from nozzles is also essential to get a faultless print quality. This work at first developed a new method of statistically evaluating the droplet deflection by the dotimages printed on media. Different microflow architectures (arches) for thermal-bubble inkjet (TIJ) heads with perturbed orifices were designed in order to eject the droplets of 5∼7 pL with the jetting frequency of 5∼19 kHz. A variety of drop velocities were individually got by these different nozzle geometry to adjust the influence of deflection due to the asymmetry and the perturbation of orifices. Meanwhile the factors injuring or degrading the vertical directionality can be clarified. These evaluations of new microflow arches indicate the factors to reduce deflection and therefore approach the high-quality printing.
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Document Type: Research Article

Publication date: 2003-01-01

More about this publication?
  • 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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