Micro-film formation by multi-nozzle electrostatic jets

Kazuyuki Tada, Kiyohito Maruo, Norte Endo, Nozomi Yoshida, Hiroyuki Kawamoto

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Applying micro spray of electrostatic Inkjet, precision film coating was examined experimentally. Heretofore, high quality coating was demonstrated with using a single nozzle. A critical issue, however, lies in terms of productivity; the amount of liquid jetted from a single nozzle was too small to obtain sufficiently high coating speed. To overcome the situation, a possibility of multi-nozzle was investigated in this report. Two types of coating liquids were used, one of which was dilute dispersion and the other was viscous solution. As results, jetting with the dilute dispersion from seven nozzles made of stainless steel was fanned out toward the opposite plate electrode. By intentionally clogging the both end-nozzles and making them as electrodes, the direction was remedied and parallel jets were obtained. According to the increment of applied voltage, jetting mode was varied from dripping mode to cone-jet mode. Although the variation of jetting mode was qualitatively the same as that of the single nozzle, the higher voltage was required for the multi-nozzle system. Furthermore, the change of jetting mode and uniform distribution of droplets always started from the end-nozzles. Again, high voltage was required to alleviate the fluctuation of the droplet size. From cylinder coating experiments it was demonstrated that the multi nozzles with dummy electrodes at high applied voltage could jet well-oriented fine and uniform droplets to acquire quality film coating.

    Original languageEnglish
    Title of host publicationInternational Conference on Digital Printing Technologies
    Pages297-300
    Number of pages4
    Publication statusPublished - 2010
    Event26th International Conference on Digital Printing Technologies, NIP26 and 6th International Conference on Digital Fabrication 2010, DF 2010 - Austin, TX
    Duration: 2010 Sep 192010 Sep 23

    Other

    Other26th International Conference on Digital Printing Technologies, NIP26 and 6th International Conference on Digital Fabrication 2010, DF 2010
    CityAustin, TX
    Period10/9/1910/9/23

    ASJC Scopus subject areas

    • Media Technology
    • Computer Science Applications

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  • Cite this

    Tada, K., Maruo, K., Endo, N., Yoshida, N., & Kawamoto, H. (2010). Micro-film formation by multi-nozzle electrostatic jets. In International Conference on Digital Printing Technologies (pp. 297-300)