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31 条记录 (耗时 0.025 秒)

    Magnetic recording particulate medium
    12.
    发明授权
    Magnetic recording particulate medium 失效
    磁记录微粒介质

    公开(公告)号：US6149989A

    公开(公告)日：2000-11-21

    申请号：US84866

    申请日：1998-05-28

    申请人： Hiroaki Araki ,  Tsuneo Yoshida ,  Toshichika Aoki ,  Masashi Aonuma ,  Kazuo Kato ,  Kazutoshi Katayama ,  Hiroshi Hashimoto

    发明人： Hiroaki Araki ,  Tsuneo Yoshida ,  Toshichika Aoki ,  Masashi Aonuma ,  Kazuo Kato ,  Kazutoshi Katayama ,  Hiroshi Hashimoto

    IPC分类号： G11B5/706 ,  G11B5/66

    CPC分类号： G11B5/7085 ,  G11B5/70621 ,  Y10S428/90

    摘要： The present invention discloses a magnetic recording particulate mediumhaving amagnetic layer on anonmagnetic support, the magnetic layer containing a ferromagnetic metal powder and a binder and having a coercive force of 1,400 to 1,700 Oe, wherein the ferromagnetic metal powder is spindle-shaped particles consisting essentially of Fe and having a Co/Fe ratio of from 1 to 5 atomic %, an Al/Fe ratio of from 5 to 15 atomic %, an average major axis length of 0.1 to 0.2 .mu.m and a specific surface area of 40 to 50 m.sup.2 /g, and the binder contains a polyurethane consisting essentially of a diol component comprising a polyether polyol and a polyester polyol and a polyisocyanate component. This magnetic recording particulate medium is characterized by minimal head wear, freedom from head clogging, and satisfactory electromagnetic characteristics.

    摘要翻译： 本发明公开了一种磁性载体上的磁记录微粒介质，其磁性层含有强磁性金属粉末和粘合剂，矫顽力为1,400至1700He，其中铁磁性金属粉末为纺锤形颗粒，主要由 Fe，Co / Fe比为1〜5原子％，Al / Fe比为5〜15原子％，平均长轴长度为0.1〜0.2μm，比表面积为40〜50μm / g，并且粘合剂含有主要由包含聚醚多元醇和聚酯多元醇和多异氰酸酯组分的二醇组分组成的聚氨酯。 这种磁记录颗粒介质的特征在于最小的头部磨损，不受头部堵塞和令人满意的电磁特性。

    OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF RECORDING INFORMATION
    13.
    发明申请
    OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF RECORDING INFORMATION 审中-公开
    光信息记录介质和记录信息的方法

    公开(公告)号：US20080199808A1

    公开(公告)日：2008-08-21

    申请号：US12030628

    申请日：2008-02-13

    申请人： Keita TAKAHASHI ,  Kazutoshi Katayama

    发明人： Keita TAKAHASHI ,  Kazutoshi Katayama

    IPC分类号： G03F7/00

    CPC分类号： G11B7/24079 ,  G11B7/00455 ,  G11B7/2467 ,  G11B7/2475 ,  G11B7/2478 ,  G11B7/248 ,  G11B2007/24612

    摘要： The optical information recording medium comprises a recording layer comprising a compound denoted by general formula (I). A denotes a hydrogen atom or a substituent, B1, B2, B3, and B4 each independently denote an atom group forming an aromatic ring with two terminal carbon atoms, M denotes two hydrogen atoms, a divalent to tetravalent metal atom, a metal oxide, a metal atom having a ligand, or a metal oxide having a ligand, C denotes (L-(D)1) or E, D and E each independently denote a prescribed monovalent substituent, L denotes a divalent linking group, l denotes an integer ranging from 1 to 10, m denotes an integer ranging from 0 to 15, n denotes an integer ranging from 1 to 16, wherein m+n=16.

    摘要翻译： 光学信息记录介质包括由通式（I）表示的化合物的记录层。 A表示氢原子或取代基，B 1，B 2，B 3和B 4各自 独立地表示形成具有两个末端碳原子的芳环的原子团，M表示两个氢原子，二价至四价金属原子，金属氧化物，具有配体的金属原子或具有配体的金属氧化物，C表示（ L（D）1）或E，D和E各自独立地表示规定的一价取代基，L表示二价连接基团，l表示1〜10的整数，m表示整数 0至15，n表示1至16的整数，其中m + n = 16。

    OPTICAL INFORMATION RECORDING MEDIUM, METHOD OF RECORDING INFORMATION AND METHOD OF USING COMPOUND
    14.
    发明申请
    OPTICAL INFORMATION RECORDING MEDIUM, METHOD OF RECORDING INFORMATION AND METHOD OF USING COMPOUND 审中-公开
    光学信息记录介质，记录信息的方法和使用化合物的方法

    公开(公告)号：US20080199807A1

    公开(公告)日：2008-08-21

    申请号：US12029561

    申请日：2008-02-12

    申请人： Keita Takahashi ,  Kazutoshi Katayama

    发明人： Keita Takahashi ,  Kazutoshi Katayama

    IPC分类号： G11B7/24

    CPC分类号： G11B7/248 ,  G11B7/246 ,  G11B7/256 ,  G11B7/259 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/25715

    摘要： The optical information recording medium comprises a recording layer comprising a dye on a support. The recording layer comprises a compound comprising a substituent having a property of producing a gas by thermal decomposition. The method of recording information on the recording layer comprised in the above optical information recording medium by irradiation of a laser beam onto the optical information recording medium. The method of using a compound comprising a substituent having a property of producing a gas by thermal decomposition as an additive in a solution comprising a dye.

    摘要翻译： 光学信息记录介质包括在载体上包含染料的记录层。 记录层包括具有通过热分解产生气体的性质的取代基的化合物。 通过将激光束照射到光学信息记录介质上，在包含在上述光学信息记录介质中的记录层上记录信息的方法。 在包含染料的溶液中使用包含具有通过热分解产生气体的性质的取代基作为添加剂的化合物的方法。

    Optical information recording medium and manufacturing method thereof
    18.
    发明申请
    Optical information recording medium and manufacturing method thereof 审中-公开
    光信息记录介质及其制造方法

    公开(公告)号：US20070190283A1

    公开(公告)日：2007-08-16

    申请号：US11659630

    申请日：2005-10-18

    申请人： Takashi Imai ,  Yoshihisa Usami ,  Kazutoshi Katayama

    发明人： Takashi Imai ,  Yoshihisa Usami ,  Kazutoshi Katayama

    IPC分类号： B32B3/02

    CPC分类号： G11B7/26 ,  G11B7/24038 ,  G11B7/24079

    摘要： To provide an optical information recording medium capable of attaining high density recording and reducing the leakage of signals to adjacent tracks (cross-talk). The optical information recording medium includes: a first substrate having a pre-groove; an undercoating layer, a dye recording layer, and a reflective layer provided in this order on the first substrate; and a second substrate bonded to the reflective layer via an adhesive layer or a sticky layer, in which the pre-groove has a track pitch of 0.1 to 0.6 μm and a groove depth of 20 to 200 nm.

    摘要翻译： 提供能够实现高密度记录并减少信号到相邻轨道的泄漏（串扰）的光学信息记录介质。 光信息记录介质包括：具有预凹槽的第一基板; 底涂层，染料记录层和反射层依次设置在第一基板上; 以及经由粘合剂层或粘性层粘合到反射层的第二基板，其中预凹槽的轨道间距为0.1至0.6μm，凹槽深度为20至200nm。

    Magnetic recording medium and magnetic recording mode using floppy disk
    19.
    发明授权
    Magnetic recording medium and magnetic recording mode using floppy disk 失效
    磁记录介质和磁记录模式使用软盘

    公开(公告)号：US06740407B1

    公开(公告)日：2004-05-25

    申请号：US09618152

    申请日：2000-07-17

    申请人： Kazuyuki Usuki ,  Kazutoshi Katayama

    发明人： Kazuyuki Usuki ,  Kazutoshi Katayama

    IPC分类号： G11B572

    CPC分类号： G11B5/72 ,  G11B5/8408 ,  G11B5/85 ,  Y10T428/1341

    摘要： A magnetic disk, comprising a magnetic layer, a protective layer, and a lubricating layer coated at least on one surface of a flexible non-magnetic support member or a rigid non-magnetic support member, wherein the protective layer comprises a carbon film containing hydrogen, nitrogen, and rare gas elements, nitrogen content is 0.5-8.0 atom %, and rare gas content is 0.5-1.2 atom %, and a magnetic recording mode using a floppy disk, wherein magnetic signal is recorded and reproduced using a floppy disk device provided with a carbon protective layer on the surface of the head or the slider.

    摘要翻译： 一种磁盘，包括磁性层，保护层和涂覆在柔性非磁性支撑构件或刚性非磁性支撑构件的至少一个表面上的润滑层，其中保护层包括含有氢的碳膜 ，氮气和稀有气体元素，氮含量为0.5-8.0原子％，稀有气体含量为0.5-1.2原子％，使用软盘的磁记录模式，其中使用软盘装置记录和再现磁信号 在头部或滑块的表面上设置有碳保护层。