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    Flexible magnetic disk sheet
    1.
    发明授权
    Flexible magnetic disk sheet 失效
    柔性磁盘片

    公开(公告)号：US4660119A

    公开(公告)日：1987-04-21

    申请号：US683294

    申请日：1984-12-18

    申请人： Mikihiko Kato ,  Shigeo Komine ,  Kazuhiko Morita

    发明人： Mikihiko Kato ,  Shigeo Komine ,  Kazuhiko Morita

    IPC分类号： G11B5/82 ,  C08L67/02 ,  G11B5/73 ,  G11B23/00 ,  G11B23/033 ,  G11B23/02 ,  G11B5/016

    CPC分类号： G11B23/0332 ,  G11B23/0035

    摘要： A flexible magnetic disk sheet having a central circular hole is described, through which an apparatus for reading and writing is engaged, and enclosed in an jacket having a larger central circular hole exposing the hole of the disk sheet within the hole of the jacket, wherein a reinforcing plastic ring containing a solid lubricating agent is provided on the region of the flexible magnetic disk sheet immediately surrounding the central circular hole thereof.

    摘要翻译： 描述了一种具有中心圆形孔的柔性磁盘片，通过该柔性磁盘片将用于阅读和书写的装置接合，并且封闭在具有较大中心圆孔的护套中，该护套将盘片的孔暴露在护套的孔内，其中 在其周围的柔性磁盘片的区域上设置有固体润滑剂的增强塑料环。

    Flexible disk
    2.
    发明授权
    Flexible disk 失效
    灵活磁盘

    公开(公告)号：US4652480A

    公开(公告)日：1987-03-24

    申请号：US670959

    申请日：1984-11-13

    申请人： Mikihiko Kato ,  Shigeo Komine ,  Yasutoshi Okuzawa ,  Kazuhiko Morita

    发明人： Mikihiko Kato ,  Shigeo Komine ,  Yasutoshi Okuzawa ,  Kazuhiko Morita

    IPC分类号： C09D163/00 ,  C09D175/04 ,  G11B5/72 ,  G11B5/82 ,  G11B23/00 ,  G11B23/02 ,  G11B23/033

    CPC分类号： G11B5/825 ,  G11B23/0035 ,  G11B23/0332 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/24322 ,  Y10T428/24802 ,  Y10T428/24967 ,  Y10T428/24975 ,  Y10T428/31993

    摘要： A flexible disk comprises a flexible disk jacket having a central opening and a disk-like magnetic recording medium having a central opening smaller than the central opening of the flexible disk jacket in diameter. The recording medium is accommodated for rotation in the flexible disk jacket so that their central openings are concentrically positioned and the portion of the recording medium surrounding the central opening is exposed through the central opening of the jacket, thereby giving access thereto. The portion of the recording medium surrounding the central opening is provided with a protective layer on one side thereof and a reinforcement ring on the other side thereof. The protective layer is formed of a composition which contains a compound with at least one unsaturated bond per molecule that is polymerizable by ultraviolet rays, and which has been cured by exposure to ultraviolet rays.

    摘要翻译： 柔性盘包括具有中心开口的柔性盘夹套和盘状磁记录介质，其中心开口的直径小于柔性盘夹套的中心开口。 记录介质被容纳在柔性盘套中旋转，使得它们的中心开口同心地定位，并且围绕中心开口的记录介质的部分通过套管的中心开口暴露，从而允许其进入。 围绕中央开口的记录介质的一部分在其一侧设置有保护层，在另一侧设置有加强环。 保护层由含有每分子具有至少一个不饱和键的化合物形成，该化合物可以通过紫外线聚合而被紫外线照射而固化。

    Method for forming protective layer on a flexible magnetic disc sheet
    5.
    发明授权
    Method for forming protective layer on a flexible magnetic disc sheet 失效
    在柔性磁盘片上形成保护层的方法

    公开(公告)号：US4647473A

    公开(公告)日：1987-03-03

    申请号：US658712

    申请日：1984-10-09

    申请人： Mikihiko Kato ,  Shigeo Komine ,  Kazuhiko Morita ,  Yasutoshi Okuzawa

    发明人： Mikihiko Kato ,  Shigeo Komine ,  Kazuhiko Morita ,  Yasutoshi Okuzawa

    IPC分类号： G11B5/82 ,  C09D133/12 ,  G11B5/72 ,  G11B5/84 ,  G11B23/00 ,  G11B23/033 ,  G11B5/70

    CPC分类号： G11B5/72 ,  Y10S428/90 ,  Y10T428/24322 ,  Y10T428/24942 ,  Y10T428/24975

    摘要： A method for forming protective layer on a surface portion surrounding the edge of a central aperture of a flexible magnetic disc sheet is described, comprising providing a radiation polymerizable composition on a surface portion surrounding the edge of the central aperture of the flexible magnetic disc sheet by screen printing, and hardening the composition by exposure to radiation; a flexible magnetic disc is also described, wherein a protective layer by the foregoing method is provided, with said protective layer having an inner diameter larger than the diameter of the aperture of the disc sheet and an outer diameter smaller than the diameter of the aperture of a jacket enclosing the disc sheet.

    摘要翻译： 描述了在围绕柔性磁盘片的中心孔的边缘的表面部分上形成保护层的方法，其包括在围绕柔性磁盘片的中心孔的边缘的表面部分上提供可辐射聚合的组合物，该表面部分通过 丝网印刷，并通过暴露于辐射来硬化组合物; 还描述了一种柔性磁盘，其中提供了通过上述方法的保护层，其中所述保护层的内径大于盘片的孔的直径，外径小于圆盘片的孔的直径 围绕盘片的护套。

    Flexible magnetic disk
    6.
    发明授权
    Flexible magnetic disk 失效
    灵活磁盘

    公开(公告)号：US4707392A

    公开(公告)日：1987-11-17

    申请号：US706568

    申请日：1985-02-28

    申请人： Mikihiko Kato ,  Yasutoshi Okuzawa ,  Shigeo Komine ,  Kazuhiko Morita

    发明人： Mikihiko Kato ,  Yasutoshi Okuzawa ,  Shigeo Komine ,  Kazuhiko Morita

    IPC分类号： G11B5/72

    CPC分类号： G11B5/72 ,  Y10S428/90 ,  Y10T428/24322 ,  Y10T428/24355 ,  Y10T428/24372 ,  Y10T428/24413 ,  Y10T428/31609 ,  Y10T428/31935

    摘要： A flexible magnetic disk in which the friction between the magnetic sheet of the disk and a positioning member is reduced, the magnetic sheet is positioned properly and without offset each time it is loaded in a reading/reproducing device, and the tracking accuracy and dimensional accuracy are satisfactory. A protective layer is provided around the periphery of a central hole in the magnetic sheet. The protective layer is made of a composition containing a compound which has an acrylic or methacrylic acid ester bond at one or both of a main chain terminal and a side chain thereof. The compound is one which is cured by radiation. The thickness of the protective layer should be 30 microns or less, and the surface irregularity of the protective layer should be 0.03 microns or more represented in terms of a central line average roughness at a cutoff of 2.5 mm.

    摘要翻译： 一种柔性磁盘，其中磁盘的磁片和定位构件之间的摩擦减小，磁片在每次装载在读取/再现装置中时都适当地且没有偏移地定位，并且跟踪精度和尺寸精度 令人满意 在磁性片的中心孔周边设置有保护层。 保护层由含有在主链末端和侧链的一个或两个上具有丙烯酸或甲基丙烯酸酯键的化合物的组合物制成。 该化合物是通过辐射固化的化合物。 保护层的厚度应为30微米或更小，并且保护层的表面不规则度应为0.03微米或更大，以2.5毫米截止点的中心线平均粗糙度表示。

    Process for preparing magnetic recording medium
    8.
    发明授权
    Process for preparing magnetic recording medium 失效
    制备磁记录介质的方法

    公开(公告)号：US4518626A

    公开(公告)日：1985-05-21

    申请号：US566455

    申请日：1983-12-28

    申请人： Mikihiko Kato ,  Shigeo Komine ,  Toshio Kawamata ,  Kazuhiko Morita ,  Tsunehiko Sato

    发明人： Mikihiko Kato ,  Shigeo Komine ,  Toshio Kawamata ,  Kazuhiko Morita ,  Tsunehiko Sato

    IPC分类号： G11B5/845 ,  G11B5/84

    CPC分类号： G11B5/845

    摘要： A process for preparing a magnetic recording medium comprised of a non-magnetic support having a magnetic layer coated thereon is disclosed. The process involves continuously travelling an undried magnetic layer on a support through a means for magnetic orientation. The means is comprised of at least 5 magnets which are installed at intervals from each other over the undried magnetic layer or under the support. The magnets are positioned in such a manner that each adjacent pole of the magnets facing the magnetic layer or the reverse surface of the support has a different polarity and that the strength of the magnetic field of each adjacent magnet is gradually reduced toward the travelling direction of the magnetic layer. Further the magnets are positioned in such a manner that the line of direction of the magnetic force between adjacent magnets is parallel to the magnetic layer and in opposite directions, whereby the ferromagnetic fine particles in the magnetic layer are randomly oriented. When the particles are randomly oriented the magnetic material can be formed into magnetic recording discs which do not suffer from modulation which occurs with magnetic discs formed from magnetic material which has its magnetic particles oriented in a machine direction.

    摘要翻译： 公开了一种制备磁记录介质的方法，该记录介质由其上涂覆有磁性层的非磁性载体构成。 该过程涉及通过用于磁性取向的装置连续地在支撑体上行进未干燥的磁性层。 该装置包括至少5个磁体，这些磁体在未干燥的磁性层上或在支撑件下彼此间隔地安装。 磁体的定位方式是使磁体的相邻磁极与磁性层或支撑体的反面具有不同的极性，并且每个相邻磁体的磁场的强度朝向 磁性层。 此外，磁体以这样的方式定位，使得相邻磁体之间的磁力方向线平行于磁性层并且在相反方向上，由此磁性层中的铁磁细颗粒被随机取向。 当颗粒被随机取向时，磁性材料可以形成磁记录盘，其不受由磁性材料形成的磁盘而发生的调制，磁性材料的磁性颗粒沿纵向取向。

    Apparatus for making magnetic recording medium
    10.
    发明授权
    Apparatus for making magnetic recording medium 失效
    磁记录介质制造装置

    公开(公告)号：US4672913A

    公开(公告)日：1987-06-16

    申请号：US861608

    申请日：1986-05-09

    申请人： Mikihiko Kato ,  Shinichi Kato ,  Kazunori Komatsu ,  Shigeo Komine

    发明人： Mikihiko Kato ,  Shinichi Kato ,  Kazunori Komatsu ,  Shigeo Komine

    IPC分类号： C09D5/23 ,  G11B5/845 ,  B05B5/02

    CPC分类号： G11B5/845

    摘要： In a method of and apparatus for making a magnetic recording medium, a plurality of rod-like orientation magnets are positioned in spaced relation in the movement direction of a non-magnetic substrate so that the magnetic pole facing the non-magnetic substrate is different between adjacent orientation magnets and the orientation magnets are oblique with respect to the substrate movement direction and alternately point reversely. The spaces between the orientation magnets are adjusted so that the intensity of the magnetic field generated in the substrate movement direction between adjacent orientation magnets is 50 Oe or less. A magnetic coating composition is applied onto the non-magnetic substrate, and magnetic grains contained in the composition are randomly orientated by the orientation magnets.

    摘要翻译： 在制造磁记录介质的方法和装置中，多个杆状取向磁体在非磁性基板的移动方向上以间隔的关系定位，使得面对非磁性基板的磁极在 相邻取向磁铁和取向磁铁相对于基板移动方向倾斜并交替地反向地指向。 调整取向磁体之间的空间，使得在相邻取向磁体之间的基板移动方向上产生的磁场的强度为50Oe以下。 将磁性涂料组合物施加到非磁性基材上，并且组合物中所含的磁性颗粒通过取向磁体随机取向。