Classification of particle size utilizing traveling wave field

Hiroyuki Kawamoto, Yoji Okada, Tetsuya Kashima, Shinjiro Umezu

    Research output: Contribution to journalArticle

    Abstract

    The authors have developed five kinds of techniques on electrostatic classification of particle size utilizing the balance of the electrostatic and gravitational force. The first is an inclined plate conveyer system. A plate conveyer consisted of parallel electrodes was constructed and four-phase traveling field was applied to the electrodes to transport particles on the conveyer. Particles were classified with size under the voltage application of appropriate frequency based on the feature that small particles were transported upward against the gravity but large particles were apt to fall down. The second technique was an inclined tube conveyer system. The principle is common with that of the inclined plate system. The third technique utilizes a circular electrostatic conveyer similar with the mass spectroscopy. The forth is also circular but utilizes the feature that a locus of the small particle is high compared to that of the large particle. The last is the combination of the linear conveyer and an electrostatic separation roller located at the end of the conveyer. Small particles were attached onto the roller charged by a charger roller. These techniques are expected to be utilized to the classification of toner and carrier particles used in electrophotography.

    Original languageEnglish
    Pages (from-to)3509-3516
    Number of pages8
    JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
    Volume72
    Issue number11
    Publication statusPublished - 2006 Nov

    Fingerprint

    Electrostatics
    Particle size
    Electrodes
    Gravitation
    Spectroscopy
    Electric potential

    Keywords

    • Electromagnetic induced vibration
    • Electrostatic force
    • Information processing equipment
    • Traveling wave

    ASJC Scopus subject areas

    • Mechanical Engineering

    Cite this

    Classification of particle size utilizing traveling wave field. / Kawamoto, Hiroyuki; Okada, Yoji; Kashima, Tetsuya; Umezu, Shinjiro.

    In: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 72, No. 11, 11.2006, p. 3509-3516.

    Research output: Contribution to journalArticle

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    AU - Umezu, Shinjiro

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