| 摘要 |
A color picture tube mask frame includes a mask frame body which has a rectangular shape and in which a skirt portion of a molded shadow mask is fitted. The skirt portion corresponds to a shape of the mask frame and is molded to surround an apertured portion having a large number of apertures at a central portion of the shadow mask and to extend in a direction substantially perpendicular to the apertured portion. The mask frame body has a groove formed at each corner on a skirt portion receiving side so as to receive a thick wall portion formed at a corresponding corner of the shadow mask.
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