| 摘要 |
PURPOSE:To regulate a distance between a grid and a member to be electrostatically charged, by no-adjustment, and to execute easily positioning by providing a member for determining a space position of the grid on a grid holding member. CONSTITUTION:A corona discharger 4 is constituted of a case body 20, a discharge wire 21, wire 21 fitting members 23, 24, a holding member 33 of a grid 34, a gap piece 35, etc. Vertical direction movable pieces 27, 28 are provided as a wire 21 position setting means in the members 23, 24. Rollers 29, 30 are provided on shafts 31, 32 of the lower end of the piece, contact with a member 3 to be electrostatically charged and are driven. The piece is supported so as to be slidable along inside walls 23a, 23b, therefore, moves in the vertical direction against the member 3. When this discharger is set, the piece 35 contacts by pressing to the member 3, the member 33 is pushed up, and a grid position can be positioned exactly. |
