Development of electrostatic paper separation and feed mechanism

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    A new paper separation and feed mechanism is proposed to realize a highly reliable paper handling system for printers and copiers. The paper-separation system consisted of a pair of parallel electrodes and a paper pile between the electrodes. Electrostatic separation of a piece of paper was possible from the top of the pile when the applied voltage exceeded the threshold needed to generate an electrostatic force larger than the weight of the paper. The threshold voltage was on the order of several kilovolts, and it agreed with the numerical value calculated using the finite element method (FEM) for the electrostatic field. Based on these basic investigations, a prototype mechanism for paper separation and feeding was constructed. It consisted of a roller-type separation electrode coated with an insulating film, a biased charger roller in contact with the separation roller to charge the insulating film on the separation roller, a ground electrode, and a paper pile situated between the electrodes. When an electrostatic field was applied between the biased charger roller and the ground electrode on which the paper pile was mounted, only the top sheet of paper separated, adhering electrostatically to the roller. The sheet was then fed rotating the separation roller. Using this system, reliable paper separation and feed was realized and a feed speed over 600 mm/s was demonstrated.

    Original languageEnglish
    Pages (from-to)438-444
    Number of pages7
    JournalJournal of Electrostatics
    Volume65
    Issue number7
    DOIs
    Publication statusPublished - 2007 Jun

    Fingerprint

    Static Electricity
    rollers
    Electrostatics
    Electrodes
    electrostatics
    piles
    Piles
    electrodes
    Grounding electrodes
    Electric fields
    printers
    electric fields
    Electrostatic force
    Threshold voltage
    Weights and Measures
    threshold voltage
    finite element method
    prototypes
    Finite element method
    thresholds

    Keywords

    • Biased charger roller
    • Electrostatic force
    • Gas discharge
    • Paper feeder
    • Paper handling

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Materials Chemistry
    • Materials Science(all)
    • Physics and Astronomy(all)
    • Surfaces and Interfaces

    Cite this

    Development of electrostatic paper separation and feed mechanism. / Kawamoto, Hiroyuki; Umezu, Shinjiro.

    In: Journal of Electrostatics, Vol. 65, No. 7, 06.2007, p. 438-444.

    Research output: Contribution to journalArticle

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