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    • 3. 发明申请
    • REEL OF MAGNETIC TAPE CARTRIDGE
    • 磁带盒的卷轴
    • WO00030111A1
    • 2000-05-25
    • PCT/JP1999/006277
    • 1999-11-11
    • G11B15/66G11B23/037G11B23/04G11B23/087G11B23/107
    • G11B15/662G11B23/037G11B23/043G11B23/044G11B23/08728G11B23/107
    • A reel (2) of a magnetic tape cartridge (1) which is rotatably housed in a cartridge case (3) and on which a magnetic tape is wound, wherein a magnet attracting in a reel bottom wall (21a), where the centre hole (25a) a metal plate (25) is integrally insert-molded on the bottom face, the metal plate (25) is formed into an annular shape having a center hole (25a), and, at the insert-molding time, a resin is injected from the gate at the center portion of the center hole (25a) of the metal plate (25) to form a recess (21b) of the metal plate (25) is sealed with the resin, at a portion between the gate trace (21c) of the center portion and the inner circumference of the center hole (25a) of the metal plate (25).
    • 一种可旋转地容纳在盒壳体(3)中的磁带盒(1)的卷轴(2),其上缠绕有磁带,其中磁体吸引在卷轴底壁(21a)中,其中中心孔 (25a)金属板(25)在底面一体地插入成型,金属板(25)形成为具有中心孔(25a)的环状,并且在嵌入成型时,树脂 在所述金属板(25)的中心孔(25a)的中央部从所述浇口注入,以形成所述金属板(25)的凹部(21b),所述凹部(21b)被所述树脂密封在所述栅极迹线 (21c)和金属板(25)的中心孔(25a)的内周。