| 摘要 |
A web charging apparatus comprising a first grounded electrode being a roller contacting a whole width of a first surface of a moving continuous web, a discharge electrode facing said first grounded electrode across the web, a second grounded electrode arranged behind said discharge electrode relative to said first grounded electrode, and an adjuster for moving said second grounded electrode at a plurality of positions along a lengthwise direction of said discharge electrode to adjust distances between said discharge electrode and said second grounded electrode at the plurality of positions, respectively, such that a distance between said discharge electrode and said second grounded electrode at a lengthwise central part of said discharge electrode facing a widthwise central part of the web is larger than a distance between said discharge electrode and said second grounded electrode at two distal end parts of said discharge electrode facing widthwise edge parts of the web, wherein a corona discharge is established between said first grounded electrode and said discharge electrode via the web by which electrostatic charges are deposited on a second surface of the web, and wherein said web charging apparatus is arranged at an upstream side of a coating apparatus continuously coating the web with a coating solution. <IMAGE>
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