Dynamics of carrier particles in two-component magnetic brush development system for laser printers

Hiroyuki Kawamoto, Takashi Hiratsuka, Hideyuki Wakai

    研究成果: Article

    抜粋

    We have investigated dynamics of a magnetic brush of carrier particles in the two-component development system of electrophotography by the numerical simulation with an improved Distinct Element Method and the experimental observation with a high-speed microscope camera. Twodimensional magnetic field was calculated by superposing measured discrete magnetic flux densities on a development sleeve. It has been calculated and observed that magnetic chains of the brush grow up in the development area inclining in parallel in the direction of the magnetic field and they are crushed by a photoreceptor drum. The brush is depressed to backward before the center of the gap and springs just before the brush become free. The spring-back of the brush at the backward of the development area seems to cause a stripe defect of the developed toner images on the photoreceptor if the force applied by the brush to the photoreceptor is excessive. The differential force applied by individual chain is dense and small with small particles. On the other hand, it is rough and large with large particles. These suggest that small carrier particles are preferable to prevent disturbance of developed toner particles on the photoreceptor. The effects of the development gap and the thickness of supplied carrier particles have also evaluated.

    元の言語English
    ページ(範囲)349-356
    ページ数8
    ジャーナルNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
    75
    発行部数750
    出版物ステータスPublished - 2009 2

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Mechanics of Materials
    • Industrial and Manufacturing Engineering

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