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Observation of Surface Change of Corona Discharge Wire

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The stability and uniformity of corona discharge are significant in the electrophotographic process. The corona discharge is easily affected by the state of the wire surface and environment. The discharges were occurred at 1 hour, 3 hours, 10 hours and 20 hours. The morphology of the products grown on the wire surfaces was investigated. With an increase of the discharge time, the needle crystals, instead of the spots grow on the wire surfaces in the positive cases. On the other hand, a large amount of projections distribute on the wire surfaces non-uniformly, and some projections grow to cluster in the negative cases. By a long discharge time, a thin silicon oxide film grows to cover on the wire surfaces non-uniformly in both polarity cases. The growths of the products affected by the discharge current also are studied.

Document Type: Research Article

Publication date: January 1, 2008

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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