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76 条记录 (耗时 0.015 秒)

    Process for producing magnetic recording medium
    1.
    发明授权
    Process for producing magnetic recording medium 失效
    磁记录介质的制造方法

    公开(公告)号：US4678682A

    公开(公告)日：1987-07-07

    申请号：US496734

    申请日：1983-05-20

    申请人： Takamitsu Asai ,  Goro Akashi ,  Tatsuji Kitamoto ,  Hiroshi Chikamasa ,  Tsunehiko Sato

    发明人： Takamitsu Asai ,  Goro Akashi ,  Tatsuji Kitamoto ,  Hiroshi Chikamasa ,  Tsunehiko Sato

    IPC分类号： G11B5/845 ,  B05D3/14

    CPC分类号： G11B5/845

    摘要： The perpendicular magnetic orientation of a magnetic layer containing platelet-form ferromagnetic particles coated on a web support is effectively performed by passing a web having thereon the coated magnetic layer in an undried state through a magnetic field formed by plural pairs of opposite pole type magnets disposed in the travelling direction of the web with a gap between adjacent pairs of magnets, while supplying drying air through each gap onto the surface of the travelling web to substantially complete the drying of the coated layer while the web is in the magnetic field. A partition may be inserted in each gap so that the lower end of the partition is close to the upper surface of the travelling web to divide the gap into a front section and a back section, and the drying air may be passed through these sections.

    摘要翻译： 通过使其上具有涂覆的磁性层的卷材在未干燥状态下通过由多对成对的相对极型磁体形成的磁场而使包含在片状载体上的含有片状铁磁颗粒的磁性层的磁性层的垂直磁性取向 在相邻成对的磁体之间具有间隙的幅材的行进方向上，同时通过每个间隙将干燥空气提供到行进幅材的表面上，以在幅材处于磁场的同时基本上完成涂覆层的干燥。 可以在每个间隙中插入隔板，使得隔板的下端靠近行进网的上表面，以将间隙分成前部和后部，并且干燥空气可以通过这些部分。

    Magneto-optical disk memory
    2.
    发明授权
    Magneto-optical disk memory 失效
    磁光盘存储器

    公开(公告)号：US4610903A

    公开(公告)日：1986-09-09

    申请号：US687300

    申请日：1984-12-28

    申请人： Masaaki Nomura ,  Akira Nahara ,  Tatsuji Kitamoto

    发明人： Masaaki Nomura ,  Akira Nahara ,  Tatsuji Kitamoto

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B7/24

    CPC分类号： G11B11/10582 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/268

    摘要： A magneto-optical disk memory comprises a magneto-optical recording medium constituted by a flexible substrate, and a recording thin film overlaid on the substrate. The recording thin film is fabricated of an amorphous rare-earth transition metal alloy having the easy axis of magnetization normal to the film surface. The magneto-optical recording medium is sandwiched between two hard supporting disks.

    摘要翻译： 磁光盘存储器包括由柔性衬底构成的磁光记录介质和覆盖在衬底上的记录薄膜。 该记录薄膜由易磁化轴垂直于膜表面的无定形稀土过渡金属合金制成。 磁光记录介质夹在两个硬支撑盘之间。

    Ferromagnetic particles with stable magnetic characteristics and method of preparing same
    3.
    发明授权
    Ferromagnetic particles with stable magnetic characteristics and method of preparing same 失效
    具有稳定磁特性的铁磁颗粒及其制备方法

    公开(公告)号：US4608093A

    公开(公告)日：1986-08-26

    申请号：US771073

    申请日：1985-08-30

    申请人： Shizuo Umemura ,  Tatsuji Kitamoto

    发明人： Shizuo Umemura ,  Tatsuji Kitamoto

    IPC分类号： G11B5/706 ,  B22F1/02 ,  C09D5/23 ,  C09D7/12 ,  H01F1/06 ,  H01F1/09 ,  C23C8/14

    CPC分类号： H01F1/061 ,  H01F1/09 ,  Y10S428/90 ,  Y10T428/2991

    摘要： Cobalt-free ferromagnetic particles are disclosed. The particles are comprised of ferromagnetic metal inner cores and an outer oxidized layer. The particles have a saturation magnetization of 60 to 100 emu/g and a coercive force of 500 Oe or more. The outer layer provides a means for stabilizing the magnetic characteristics of the particles at temperatures not higher than 80.degree. C. in air. The particles are produced by gradually oxidizing ferromagnetic metal particles containing no cobalt in oxygen-containing gas such that the surface-oxidized metal particles have a saturation magnetization of 60 to 100 emu/g. The particles provided have good magnetic characteristics which are maintained with the passage of time even when the particles are subjected to adverse temperature and humidity conditions.

    摘要翻译： 公开了无钴铁磁颗粒。 颗粒由铁磁性金属内芯和外部氧化层组成。 颗粒的饱和磁化强度为60〜100emu / g，矫顽力为500Oe以上。 外层提供了在空气中不高于80℃的温度下稳定颗粒的磁特性的方法。 通过在含氧气体中逐渐氧化不含钴的铁磁性金属颗粒，使得表面氧化金属颗粒具有60至100emu / g的饱和磁化强度来制备颗粒。 所提供的颗粒具有良好的磁特性，即使当颗粒经受不利的温度和湿度条件时，其也保持随时间的流逝。

    Magnetic sheet recorder with a magnetic sheet surface treating means
    6.
    发明授权
    Magnetic sheet recorder with a magnetic sheet surface treating means 失效
    具有磁性片表面处理装置的磁性片材记录器

    公开(公告)号：US4241368A

    公开(公告)日：1980-12-23

    申请号：US24209

    申请日：1979-03-27

    申请人： Eiichi Tadokoro ,  Tatsuji Kitamoto

    发明人： Eiichi Tadokoro ,  Tatsuji Kitamoto

    IPC分类号： G11B23/50 ,  G11B3/58 ,  G11B25/04

    CPC分类号： G11B23/505 ,  G11B23/50 ,  Y10S15/12

    摘要： In a magnetic sheet recorder, a scraping member is mounted in association with a magnetic head to be put into contact with the magnetic layer of a magnetic sheet together with the magnetic head. The scraping member is mounted ahead of the head so as to treat the recording track of the magnetic sheet in advance of the head when the magnetic sheet is rotated. The scraping member removes from the surface of the magnetic layer scratches and dust particles which cause drop-out of the output level.

    摘要翻译： 在磁片记录器中，刮削构件与磁头相关联地安装，以与磁头一起与磁性片的磁性层接触。 刮削构件安装在头部前方，以便当磁片旋转时，在头部之前处理磁片的记录轨迹。 刮擦构件从磁性层的表面除去导致输出水平下降的划痕和灰尘颗粒。

    Process of producing a magnetic recording element
    7.
    发明授权
    Process of producing a magnetic recording element 失效
    制造磁记录元件的工艺

    公开(公告)号：US4183976A

    公开(公告)日：1980-01-15

    申请号：US870146

    申请日：1978-01-17

    申请人： Yasuyuki Yamada ,  Tatsuji Kitamoto

    发明人： Yasuyuki Yamada ,  Tatsuji Kitamoto

    IPC分类号： G11B5/738 ,  H01F10/00

    CPC分类号： G11B5/738

    摘要： A process of producing a magnetic recording element comprising a non-magnetic support having provided thereon a subbing layer and further having provided thereon a magnetic layer comprising a ferromagnetic powder and a binder, in which the non-magnetic support is a biaxially stretched polyester and the subbing layer is formed by coating a coating solution having a solids concentration of about 0.8 to about 5 wt% comprising an amorphous linear saturated polyester resin containing an aromatic dicarboxylic acid, 10 to 50 wt% of a vinylidene chloride addition polymerizable nitrile copolymer based on the polyester resin and an organic solvent mainly composed of methyl ethyl ketone, which comprises coating the subbing solution at a temperature of about 100.degree. C. or below to provide a dry thickness of about 0.03 to about 2.0 .mu.m, drying the coated layer and then coating the magnetic recording layer thereon.

    摘要翻译： 一种制造磁记录元件的方法，该磁记录元件包括非磁性载体，其上设置有一个底层，并且还设置有包含铁磁性粉末和粘合剂的磁性层，其中非磁性载体是双轴拉伸的聚酯， 通过涂布固体浓度为约0.8至约5重量％的涂布溶液，其包含含有芳族二羧酸的无定形线性饱和聚酯树脂，10至50重量％的偏二氯乙烯加成聚合性腈共聚物，基于 聚酯树脂和主要由甲基乙基酮组成的有机溶剂，其包括在约100℃或更低的温度下涂覆底层溶液以提供约0.03至约2.0μm的干燥厚度，干燥涂层，然后 在其上涂覆磁记录层。

    Method for cleaning flexible magnetic discs
    9.
    发明授权
    Method for cleaning flexible magnetic discs 失效
    清洁柔性磁盘的方法

    公开(公告)号：US4101948A

    公开(公告)日：1978-07-18

    申请号：US753165

    申请日：1976-12-21

    申请人： Eiichi Tadokoro ,  Tatsuji Kitamoto

    发明人： Eiichi Tadokoro ,  Tatsuji Kitamoto

    IPC分类号： G11B23/50 ,  B21B45/02 ,  G11B25/04

    CPC分类号： G11B23/505

    摘要： A soft, coarse, porous cleaning sheet 32 is adhered to the upper surface of a flat horizontal base plate 2, and has approximately the same configuration as the base plate. A floppy record disc 9 having a magnetic layer 10 is secured to the spindle 6 of a motor 5, and when the disc is rotated at a "below levitation" speed the layer 10 slidingly engages the cleaning sheet 32 and is scrape dusted clean thereby.