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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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Abstract:

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.

Document Type: Research Article

Publication date: 2003-01-01

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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