Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger

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

    1 Citation (Scopus)

    Abstract

    The generation of ozone in a stable regime of DC corona discharge at a pin electrode is modeled to provide data that can be utilized for the evaluation of charging and transferring devices of electrophotography with respect to reducing the ozone emission. The results of a theoretical investigation show the following: (1) The ozone generation rates of the 50 μm radius pin electrode are 0.085 ppm/μA and 0.010 ppm/μA under 5 liter/min air flow rate in case of negative corona and positive corona, respectively. The generation rate increases in accordance with the increase of the pin radius. Although the rate of ozone emission is nonlinear with respect to the discharge current, it can be assumed to be approximately linear within the usual design and operation conditions of electrophotography chargers. In case of the positive corona, ozone is formed just at the surface of the discharge electrode, but on the contrary, in case of the negative corona, ozone is formed at about 0.1 mm apart from the tip of the electrode. (2) The ozone generation rate of the charger with saw-tooth electrodes is reduced to about one third of that with a biased charger roller and it is only 1/140 of that with a corotron. The saw-tooth charger has a potential to realize virtually ozone-free charger.

    Original languageEnglish
    Title of host publicationInternational Conference on Digital Printing Technologies
    Pages508-512
    Number of pages5
    Publication statusPublished - 1999
    EventIS and T's NIP15: International Conference on Digital Printing Technologies - Orlando, FL
    Duration: 1999 Oct 171999 Oct 22

    Other

    OtherIS and T's NIP15: International Conference on Digital Printing Technologies
    CityOrlando, FL
    Period99/10/1799/10/22

    Fingerprint

    Ozone
    Electrodes
    Flow rate
    Air

    ASJC Scopus subject areas

    • Media Technology

    Cite this

    Kawamoto, H. (1999). Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger. In International Conference on Digital Printing Technologies (pp. 508-512)

    Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger. / Kawamoto, Hiroyuki.

    International Conference on Digital Printing Technologies. 1999. p. 508-512.

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

    Kawamoto, H 1999, Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger. in International Conference on Digital Printing Technologies. pp. 508-512, IS and T's NIP15: International Conference on Digital Printing Technologies, Orlando, FL, 99/10/17.
    Kawamoto H. Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger. In International Conference on Digital Printing Technologies. 1999. p. 508-512
    Kawamoto, Hiroyuki. / Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger. International Conference on Digital Printing Technologies. 1999. pp. 508-512
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    title = "Ozone Generation in Corona Discharge at Pin Electrode of Electrophotography Charger",
    abstract = "The generation of ozone in a stable regime of DC corona discharge at a pin electrode is modeled to provide data that can be utilized for the evaluation of charging and transferring devices of electrophotography with respect to reducing the ozone emission. The results of a theoretical investigation show the following: (1) The ozone generation rates of the 50 μm radius pin electrode are 0.085 ppm/μA and 0.010 ppm/μA under 5 liter/min air flow rate in case of negative corona and positive corona, respectively. The generation rate increases in accordance with the increase of the pin radius. Although the rate of ozone emission is nonlinear with respect to the discharge current, it can be assumed to be approximately linear within the usual design and operation conditions of electrophotography chargers. In case of the positive corona, ozone is formed just at the surface of the discharge electrode, but on the contrary, in case of the negative corona, ozone is formed at about 0.1 mm apart from the tip of the electrode. (2) The ozone generation rate of the charger with saw-tooth electrodes is reduced to about one third of that with a biased charger roller and it is only 1/140 of that with a corotron. The saw-tooth charger has a potential to realize virtually ozone-free charger.",
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    AB - The generation of ozone in a stable regime of DC corona discharge at a pin electrode is modeled to provide data that can be utilized for the evaluation of charging and transferring devices of electrophotography with respect to reducing the ozone emission. The results of a theoretical investigation show the following: (1) The ozone generation rates of the 50 μm radius pin electrode are 0.085 ppm/μA and 0.010 ppm/μA under 5 liter/min air flow rate in case of negative corona and positive corona, respectively. The generation rate increases in accordance with the increase of the pin radius. Although the rate of ozone emission is nonlinear with respect to the discharge current, it can be assumed to be approximately linear within the usual design and operation conditions of electrophotography chargers. In case of the positive corona, ozone is formed just at the surface of the discharge electrode, but on the contrary, in case of the negative corona, ozone is formed at about 0.1 mm apart from the tip of the electrode. (2) The ozone generation rate of the charger with saw-tooth electrodes is reduced to about one third of that with a biased charger roller and it is only 1/140 of that with a corotron. The saw-tooth charger has a potential to realize virtually ozone-free charger.

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