Patent ID: 7965487
Filing Date: 2011-06-21
Classification: B03C,H01T

Abstract:
1. A neutralization apparatus eliminating static electricity on a surface of a physical object disposed away from an ion generation element by carrying positive ions and negative ions having been generated from the ion generation element by discharge of gas, with the use of gas flow wherein the ion generation element is a minute electrode ion generation element comprising a discharge electrode arranged in one direction on a plane and provided with a minute protrusion, an induction electrode and a thin dielectric film sandwiched between the electrodes, the ion generation element is composed, in a pair, of a minute electrode ion generation element for generating positive ions in which a voltage applied to a discharge electrode has a positive pulse waveform and a minute electrode ion generation element for generating negative ions in which a voltage applied to a discharge electrode has a negative pulse waveform; at least two pairs of ion generation elements, each being in a pair of the minute electrode ion generation element for generating positive ions and the minute electrode ion generation element for generating negative ions, are arranged such that a plane including each discharge electrode is parallel to a direction of gas flow and also the direction of discharge electrode is arranged so as to be perpendicular to the direction of gas flow; each pair of the minute electrode ion generation element for generating positive ions and the minute electrode ion generation element for generating negative ions are arranged opposite each other with respect to the direction of gas flow; and balance control of positive and negative ions in a downstream position of gas flow is comprised to be possible by adjusting a voltage applied to the discharge electrode of the ion generation element.