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    Drive mechanism of video tape recorder
    1.
    发明专利
    Drive mechanism of video tape recorder 失效
    视频录像机的驱动机制

    公开(公告)号：JPS6163949A

    公开(公告)日：1986-04-02

    申请号：JP18536784

    申请日：1984-09-06

    Applicant: Sony Corp

    Inventor： TSUYAMA MANABU ,  EKI SHIGEKI

    IPC: H02K49/10 ,  G11B15/30

    Abstract: PURPOSE: To use parts in common between supply and take-up reel drive disks by attaching a yoke plate to the opposite side of a magnet set opposite to a hiss plate of either one of both reel drive disks and giving different torques to both drive disks.
    CONSTITUTION: The gear of a drive mechanism engages the tooth 2A of a lower reel drive disk 2 or a gear 6 and revolves at a take-up reel drive disk T. Thus the disk T also revolves. When the drive gear 6 is revolved, a magnetic flux generated from the other side of a magnet 3 is sent back to a magnet 3 through a yoke 11 since this yoke 11 is attached to the magnet 3. In this case, the density of the magnetic flux is higher than the disk T having no yoke plate 11. Then the revolving torque of the disk T is larger than that of a supply reel drive disk. Thus different torques can give to the supply and take-up reel drive disks although both disks have almost the same structure. Therefore the components parts can be used in common to both drive disks. This attains the reduction of cost.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过将轭板安装在与两个卷轴驱动盘中的任一个的咔嗒板相对的磁铁组的相对侧，并且向两个驱动盘提供不同的转矩，以便在供应和卷带盘驱动盘之间使用共同的部件 。 构成：驱动机构的齿轮与下卷轴驱动盘2或齿轮6的齿2A接合，并且在卷带盘驱动盘T上旋转。因此，盘T也旋转。 当驱动齿轮6旋转时，从磁体3的另一侧产生的磁通量通过磁轭11被送回到磁体3，因为该磁轭11被安装在磁体3上。在这种情况下， 磁通量高于没有轭板11的磁盘T.因此，磁盘T的旋转扭矩大于供带盘驱动盘的转矩。 因此，尽管两个盘具有几乎相同的结构，但是不同的扭矩可以给予供应和卷取驱动盘。 因此，组件部件可以共同用于驱动盘。 这样可以降低成本。

    TREATMENT OF SURFACE
    2.
    发明专利
    TREATMENT OF SURFACE 失效

    公开(公告)号：JPS5848670A

    公开(公告)日：1983-03-22

    申请号：JP14733281

    申请日：1981-09-18

    Applicant: SONY CORP

    Inventor： TSUCHIYA MASAO ,  EKI SHIGEKI ,  TAKAHASHI MIKIO ,  YAMAGUCHI TOSHIAKI

    IPC: G11B15/60 ,  C23F1/16 ,  C23F1/28

    Abstract: PURPOSE:To obtain a tape guide member capable of maintaining rhe initial characteristics during long-term use by using cupric ion and a mineral acid as the principal components of an etching soln. for treating the surface of a tape guide member. CONSTITUTION:The surface of a tape guide member is treated with an etching agent contg. cupric ion and a mineral acid as the principal components. Thus, a tape guide member with high roundness and stable surface roughness is obtd. This member undergoes remarkably less intergranular corrosion than a member treated with an etching agent contg. ferric chloride as the principal component, and it shows favorable results in a brine spray test. Even if a tape is continuously run over a long time, the intial characteristics of this member can be maintained.

    TREATMENT OF SURFACE
    4.
    发明专利
    TREATMENT OF SURFACE 失效

    公开(公告)号：JPS5848669A

    公开(公告)日：1983-03-22

    申请号：JP14733181

    申请日：1981-09-18

    Applicant: SONY CORP

    Inventor： TSUCHIYA MASAO ,  EKI SHIGEKI ,  TAKAHASHI MIKIO ,  YAMAGUCHI TOSHIAKI

    IPC: G11B15/60 ,  C23F1/16 ,  C23F1/28

    Abstract: PURPOSE:To obtain a tape guide member capable of maintaining the initial characteristics during long-term use by using nitrophenols represented by a specified general formula, alcohols and hydrochloric acid as the principal components of an etching soln. for treating the surface of a tape guide member. CONSTITUTION:The surface of a tape guide member is treated with an etching agent contg. nitrophenols represented by the formula (where each of R1, R2 and R3 is H or NO2, and one or more among them are NO2), alcohols and hydrochloric acid as the principal components. Thus, a tape guide member with high roundness and stable surface roughness such as a capstan is obtd. This member undergoes remarkably less intergranular corrosion than a member treated with an etching agent contg. ferric chloride as the principal component, and it shows favorable results in a brine spray test. Even if a tape is continuously run over a long time, the initial characteristics of this member can be maintained.

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