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Special Section: Digital Printing Technologies (including papers from NIP XIX)
Volume: 48 | Article ID: art00002
Computational Fluid Dynamics of Ionic Wind in a Corona Device in Electrophotography-(1)
  DOI :  10.2352/J.ImagingSci.Technol.2004.48.6.art00002  Published OnlineNovember 2004

Ionic wind occurs with corona discharge. Knowledge of the ionic wind in a machine is necessary for a measure of the degradation of the image that originates from the generation products on corona discharge. We investigate the characteristics of the ionic wind in the neighborhood of a corona device through Computational Fluid Dynamics to better understand this phenomenon. Various flow characteristics have been found. A λ-shaped flow appears on a cross section in the fan-off case. Several vortices are induced by the λ-shaped flow. Static pressure descends along the wire. We also find three-dimensional features. There is a countercurrent at both ends of the corona device. Momentum is axially transported. Our numerical calculations correlate well with our experimental results by Particle Image Velocimetry (PIV) and smokes. The λ-shaped flow appears also on a cross section in the fan-on case, while the flow rate of the whole system is hardly changed. The ionic wind locally has an influence on the flow field in the neighborhood of the corona device.

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Kazuhiro Mori, Hideki Okamoto, Nobuyuki Hirooka, "Computational Fluid Dynamics of Ionic Wind in a Corona Device in Electrophotography-(1)in Journal of Imaging Science and Technology,  2004,  pp 465 - 472,

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Copyright © Society for Imaging Science and Technology 2004
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