| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of an aperture grill type color-sorting electrode structure in which a damper line is brought in contact with a grid element formed in an aperture grill to restrict its vibration, where, as an installation position of a damper spring holding the damper line is deflected to twist a tape part positioned on the outer side of a grid, a contact condition between the grid element and the damper line is prohibited. SOLUTION: The plate thickness of a pair of tape parts 3 and 4 positioned on both outer sides of the grid element 52 disposed in this aperture grill 2 is thinned to reduce the rigidity thereof. Even when twisting force is generated in the tape parts 3 and 4 by action of the damper lines 45 and 46 due to deflection of the installation positions of the damper springs 40-43, this force is absorbed by warping of the tape parts 3 and 4 themselves, and end parts of the tape parts 3 and 4 closer to the grid element 52 float to prevent the grid element 52 from getting apart from the damper lines 45 and 46.
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