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    Antireflection film for plastic optical element
    4.
    发明授权
    Antireflection film for plastic optical element 失效
    塑料光学元件防反射膜

    公开(公告)号：US5725959A

    公开(公告)日：1998-03-10

    申请号：US754475

    申请日：1996-11-22

    申请人： Junji Terada ,  Makoto Kameyama ,  Junichi Sakamoto

    发明人： Junji Terada ,  Makoto Kameyama ,  Junichi Sakamoto

    IPC分类号： G02B1/11 ,  B32B9/04

    CPC分类号： G02B1/115 ,  Y10T428/264 ,  Y10T428/31667

    摘要： An antireflection film is procided on a plastic optical element as follows. An undercoat composed principally of unsaturated silicon exide SiO.sub.x (2>x>1) with a thickness within a range of 200 to 300 nm is formed on the optical element. A multi-layered film of a repeating structure is formed on the undercoat. The multi-layerd film has antireflective characteristics. The undercoat has a refractive index within a range of 1.49 to 1.59. The multi-layered film is composed of alternate lamination of a layer of a material which has a high refractive index and which is composed principally of TiO.sub.2, ZrO.sub.2 or a mixture thereof, and a layer of a material which has a low refractive index and which is composed principally of SiO.sub.x (2.gtoreq.x.gtoreq.1).

    摘要翻译： 如下在塑料光学元件上进行防反射膜的制作。 在光学元件上形成厚度在200〜300nm范围内的主要由不饱和硅离子SiO x（2> x> 1）组成的底涂层。 在底涂层上形成重复结构的多层膜。 多层膜具有抗反射特性。 底涂层的折射率在1.49〜1.59的范围内。 多层膜由具有高折射率且主要由TiO 2，ZrO 2或其混合物组成的材料层的交替叠层和具有低折射率的材料层组成，并且其中 主要由SiOx（2> / = x> / = 1）组成。

    Method for manufacturing a magnetic head core having a magnetic film
    6.
    发明授权
    Method for manufacturing a magnetic head core having a magnetic film 失效
    具有磁性膜的磁头芯的制造方法

    公开(公告)号：US4890378A

    公开(公告)日：1990-01-02

    申请号：US235824

    申请日：1988-08-19

    申请人： Takashi Suzuki ,  Toshio Yamanaka ,  Hiroyuki Suzuki ,  Tsuyoshi Orikasa ,  Takeshi Sawada ,  Makoto Kameyama ,  Kiyozumi Niizuma

    发明人： Takashi Suzuki ,  Toshio Yamanaka ,  Hiroyuki Suzuki ,  Tsuyoshi Orikasa ,  Takeshi Sawada ,  Makoto Kameyama ,  Kiyozumi Niizuma

    IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/42

    CPC分类号： G11B5/1878 ,  G11B5/127 ,  Y10T29/49043 ,  Y10T29/49057 ,  Y10T29/49067

    摘要： A magnetic head in which a first magnetic film made of a material of high saturation magnetic flux density is deposited on the surface of a block made of a high permeability material and which contains a groove for winding. A nonmagnetic film made of a nonmagnetic material and serving as a magnetic gap is formed on the first magnetic film; and a second magnetic film made of a material of high saturation magnetic flux density is further formed on the nonmagnetic film. A reinforcing block is arranged on the second magnetic film and has a nonmagnetic material portion exposed to a slide surface of a recording medium. The high permeability material block, the first magnetic film and the second magnetic film together constitute a magnetic core, and the second magnetic film is bonded with the reinforcing block.

    摘要翻译： 一种磁头，其中由高饱和磁通密度材料制成的第一磁性膜沉积在由高磁导率材料制成并且包含用于卷绕的凹槽的块的表面上。 在第一磁性膜上形成由非磁性材料制成并用作磁隙的非磁性膜; 并且在非磁性膜上进一步形成由高饱和磁通密度的材料制成的第二磁性膜。 加强块布置在第二磁性膜上，并且具有暴露于记录介质的滑动表面的非磁性材料部分。 高磁导率材料块，第一磁性膜和第二磁性膜一起构成磁芯，第二磁性膜与加强块结合。

    Method for manufacturing a magnetic head for performing high density recording and reproducing
    8.
    发明授权
    Method for manufacturing a magnetic head for performing high density recording and reproducing 失效
    用于制造用于执行高密度记录和再现的磁头的方法

    公开(公告)号：US4868972A

    公开(公告)日：1989-09-26

    申请号：US127590

    申请日：1987-12-03

    申请人： Hideaki Miyakawa ,  Makoto Kameyama

    发明人： Hideaki Miyakawa ,  Makoto Kameyama

    IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/31

    CPC分类号： G11B5/31 ,  Y10T29/49044 ,  Y10T29/49055

    摘要： A magnetic head including first and second magnetic core assemblies is provided, wherein the first assembly has a first portion forming a magnetic gap, a pair of second portions of magnetic material arranged on both sides of the first portion, and a pair of third portions of non-magnetic material arranged at a position adapted to sandwich the pair of second portions. The second magnetic core assembly includes a fourth portion of magnetic material which forms a magnetic circuit together with the pair of second portions. The head also has a groove facing at least one of first and second magnetic core assemblies for receiving a winding.

    摘要翻译： 提供了包括第一和第二磁芯组件的磁头，其中第一组件具有形成磁隙的第一部分，布置在第一部分的两侧上的一对磁性材料的第二部分，以及一对第三部分 非磁性材料布置在适于夹持该对第二部分的位置。 第二磁芯组件包括磁性材料的第四部分，其与该对第二部分一起形成磁路。 头部还具有面向用于接收绕组的第一和第二磁芯组件中的至少一个的凹槽。