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1. 发明授权

US06759138B2 Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer 有权
标题翻译：具有双层上磁层的反铁磁耦合磁记录介质
公开(公告)号：US06759138B2
公开(公告)日：2004-07-06
申请号：US10186723
申请日：2002-07-02
申请人： Hiroshi Tomiyasu , Keiji Moroishi , Teiichiro Umezawa , Kenji Ayama
发明人： Hiroshi Tomiyasu , Keiji Moroishi , Teiichiro Umezawa , Kenji Ayama
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/66 , G11B2005/0002 , G11B2005/001 , Y10T428/12646 , Y10T428/12847 , Y10T428/12854 , Y10T428/12861 , Y10T428/12868 , Y10T428/12931 , Y10T428/24355 , Y10T428/2495 , Y10T428/31
摘要： In a magnetic recording medium which includes a base body (1-4), first and second magnetic layers (5 and 7), each being of a ferromagnetic material, and a spacer layer (6) formed between the first and the second magnetic layers for inducing antiferromagnetic exchange interaction between the first and the second magnetic layers, the second magnetic layer located farther from the base body than the first magnetic layer includes a primary layer (72) and a secondary layer (71) located nearer to the base body than the primary layer. The primary layer has a primary anisotropic magnetic field while the secondary layer has a secondary anisotropic magnetic field which is smaller than the primary anisotropic magnetic field. The first magnetic layer is for controlling the antiferromagnetic exchange interaction.
摘要翻译：在包括基体（1-4）的磁记录介质中，每个都是铁磁材料的第一和第二磁性层（5和7）以及形成在第一和第二磁性层之间的间隔层（6）为了在第一和第二磁性层之间诱导反铁磁交换相互作用，位于比第一磁性层更远离基体的第二磁性层包括位于更靠近基体的主层（72）和次级层（71），比第主层。主层具有一次各向异性磁场，而次层具有小于一次各向异性磁场的次级各向异性磁场。第一磁性层用于控制反铁磁交换相互作用。

2. 发明授权

US06916558B2 Magnetic disk using a glass substrate 失效
标题翻译：使用玻璃基板的磁盘
公开(公告)号：US06916558B2
公开(公告)日：2005-07-12
申请号：US10778186
申请日：2004-02-17
申请人： Teiichiro Umezawa , Hiroshi Tomiyasu , Keiji Moroishi
发明人： Teiichiro Umezawa , Hiroshi Tomiyasu , Keiji Moroishi
IPC分类号： G11B5/738 , G11B5/65 , G11B5/66 , G11B5/73 , B32B7/02
CPC分类号： G11B5/732 , G11B5/66 , G11B5/7325 , Y10T428/24942
摘要： In a magnetic disk having a glass substrate, an amorphous underlayer is formed on the glass substrate. A magnetic layer is formed on the amorphous underlayer. The glass substrate is provided with a texture formed to induce magnetic anisotropy in the magnetic layer. The amorphous underlayer contains a group IVa element on a glass substrate side and a group Va element on a magnetic layer side.
摘要翻译：在具有玻璃基板的磁盘中，在玻璃基板上形成无定形底层。在无定形底层上形成磁性层。玻璃基板具有形成为在磁性层中引起磁各向异性的纹理。无定形底层包含玻璃基板侧的IVa族元素和磁性层侧的Va族元素。

3. 发明授权

US06670055B2 Magnetic recording medium and manufacturing method therefor 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US06670055B2
公开(公告)日：2003-12-30
申请号：US09925573
申请日：2001-08-09
申请人： Hiroshi Tomiyasu , Junichi Horikawa , Teiichiro Umezawa , Kenji Ayama , Tomotaka Yokoyama
发明人： Hiroshi Tomiyasu , Junichi Horikawa , Teiichiro Umezawa , Kenji Ayama , Tomotaka Yokoyama
IPC分类号： G11B566
CPC分类号： G11B5/851 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12847
摘要： A magnetic recording medium that is high coersive force, hard to receive influence of thermal fluctuation, and brings about a considerable improvement of S/N ratio, and in which at least an underlayer and a magnetic layer are sequentially laminated on a substrate, wherein a pre-coat layer is interposed between said underlayer and said substrate and said pre-coat layer is constructed by sequentially laminating a lower layer containing Ni and P and an upper layer made of a Cr alloy.
摘要翻译：一种磁性记录介质，其具有高的强力，难以接受热波动的影响，并且导致S / N比的显着提高，并且其中至少底层和磁性层依次层压在基板上，其中预涂层介于所述底层和所述基材之间，并且所述预涂层通过依次层压含有Ni和P的下层和由Cr合金制成的上层来构造。

4. 发明授权

US07220500B1 Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium 有权
公开(公告)号：US07220500B1
公开(公告)日：2007-05-22
申请号：US09540646
申请日：2000-03-31
申请人： Hiroshi Tomiyasu , Teiichiro Umezawa , Genshichi Hata , Takashi Morikawa , Masato Kobayashi , Masashi Suzuki , Satoshi Yokota , Tsuyoshi Watanabe
发明人： Hiroshi Tomiyasu , Teiichiro Umezawa , Genshichi Hata , Takashi Morikawa , Masato Kobayashi , Masashi Suzuki , Satoshi Yokota , Tsuyoshi Watanabe
IPC分类号： G11B5/66 , G11B5/70
CPC分类号： G11B5/732 , G11B5/40 , G11B5/455 , G11B5/66 , G11B5/7325
摘要： There is disclosed a magnetic recording medium in which a seed layer, under layer, intermediate layer, first magnetic layer, nonmagnetic layer, second magnetic layer, protective layer, and lubricant layer are successively laminated on a glass substrate, the nonmagnetic layer is constituted of an alloy containing Cr and C, and the magnetic layer is constituted of an alloy containing Co and Pt. The under layer includes at least the seed layer for finely dividing the crystal particles of the magnetic layer, the seed layer includes at least two or more layers of nonmagnetic films, and the intermediate layer formed of the material different from that of the nonmagnetic film is interposed between the nonmagnetic films. In measurement of the thermal stability of the magnetic recording medium, a head is used, the head includes a read/write element, and a write track width is twice or more as large as a read track width in the head.

5. 发明申请

US20050208341A1 Magnetic recording medium 有权
公开(公告)号：US20050208341A1
公开(公告)日：2005-09-22
申请号：US11123065
申请日：2005-05-06
申请人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
发明人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
IPC分类号： G11B5/72 , G11B5/64
CPC分类号： G11B5/72 , Y10T428/1179 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium which comprises a substrate (1), a magnetic layer (3) formed on the substrate, a carbon-based protection layer (4) comprising carbon and formed on the magnetic layer, and a lubrication layer (5) formed on the carbon-based protection layer, the carbon-based protection layer comprises a hydrogenated carbon protection layer (4a) facing the magnetic layer and a nitrogenated carbon protection layer (4b) facing the lubrication layer. The hydrogenated carbon protection layer (4a) comprises carbon and hydrogen. The nitrogenated carbon protection layer (4b) includes no hydrogen but comprises carbon and nitrogen.

6. 发明授权

US07420886B2 Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium 有权
标题翻译：磁记录介质，以及磁记录介质的热稳定性测量方法和装置
公开(公告)号：US07420886B2
公开(公告)日：2008-09-02
申请号：US11788426
申请日：2007-04-20
申请人： Hiroshi Tomiyasu , Teiichiro Umezawa , Genshichi Hata , Takashi Morikawa , Masato Kobayashi , Masashi Suzuki , Satoshi Yokota , Tsuyoshi Watanabe
发明人： Hiroshi Tomiyasu , Teiichiro Umezawa , Genshichi Hata , Takashi Morikawa , Masato Kobayashi , Masashi Suzuki , Satoshi Yokota , Tsuyoshi Watanabe
IPC分类号： G11B11/00 , G11B5/66
CPC分类号： G11B5/732 , G11B5/40 , G11B5/455 , G11B5/66 , G11B5/7325
摘要： There is disclosed a magnetic recording medium in which a seed layer, under layer, intermediate layer, first magnetic layer, nonmagnetic layer, second magnetic layer, protective layer, and lubricant layer are successively laminated on a glass substrate, the nonmagnetic layer is constituted of an alloy containing Cr and C, and the magnetic layer is constituted of an alloy containing Co and Pt. The under layer includes at least the seed layer for finely dividing the crystal particles of the magnetic layer, the seed layer includes at least two or more layers of nonmagnetic films, and the intermediate layer formed of the material different from that of the nonmagnetic film is interposed between the nonmagnetic films. In measurement of the thermal stability of the magnetic recording medium, a head is used, the head includes a read/write element, and a write track width is twice or more as large as a read track width in the head.
摘要翻译：公开了一种磁性记录介质，其中在玻璃基板上依次层叠种子层，下层，中间层，第一磁性层，非磁性层，第二磁性层，保护层和润滑剂层，非磁性层由含有Cr和C的合金，磁性层由含有Co和Pt的合金构成。底层至少包括用于细分磁性层的晶粒的种子层，种子层包括至少两层或更多层非磁性膜，由不同于非磁性膜的材料形成的中间层是介于非磁性膜之间。在测量磁记录介质的热稳定性时，使用磁头，磁头包括读/写元件，写磁道宽度是磁头中读磁道宽度的两倍或更多。

7. 发明申请

US20070248844A1 Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium 有权
标题翻译：磁记录介质，以及磁记录介质的热稳定性测量方法和装置
公开(公告)号：US20070248844A1
公开(公告)日：2007-10-25
申请号：US11788426
申请日：2007-04-20
申请人： Hiroshi Tomiyasu , Teiichiro Umezawa , Genshichi Hata , Takashi Morikawa , Masato Kobayashi , Masashi Suzuki , Satoshi Yokota , Tsuyoshi Watanabe
发明人： Hiroshi Tomiyasu , Teiichiro Umezawa , Genshichi Hata , Takashi Morikawa , Masato Kobayashi , Masashi Suzuki , Satoshi Yokota , Tsuyoshi Watanabe
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/40 , G11B5/455 , G11B5/66 , G11B5/7325
摘要： There is disclosed a magnetic recording medium in which a seed layer, under layer, intermediate layer, first magnetic layer, nonmagnetic layer, second magnetic layer, protective layer, and lubricant layer are successively laminated on a glass substrate, the nonmagnetic layer is constituted of an alloy containing Cr and C, and the magnetic layer is constituted of an alloy containing Co and Pt. The under layer includes at least the seed layer for finely dividing the crystal particles of the magnetic layer, the seed layer includes at least two or more layers of nonmagnetic films, and the intermediate layer formed of the material different from that of the nonmagnetic film is interposed between the nonmagnetic films. In measurement of the thermal stability of the magnetic recording medium, a head is used, the head includes a read/write element, and a write track width is twice or more as large as a read track width in the head.
摘要翻译：公开了一种磁性记录介质，其中在玻璃基板上依次层叠种子层，下层，中间层，第一磁性层，非磁性层，第二磁性层，保护层和润滑剂层，非磁性层由含有Cr和C的合金，磁性层由含有Co和Pt的合金构成。底层至少包括用于细分磁性层的晶粒的种子层，种子层包括至少两层或更多层非磁性膜，由不同于非磁性膜的材料形成的中间层是介于非磁性膜之间。在测量磁记录介质的热稳定性时，使用磁头，磁头包括读/写元件，写磁道宽度是磁头中读磁道宽度的两倍或更多。

8. 发明授权

US07208236B2 Magnetic recording medium with multi-portion carbon-based protection layer, and apparatus thereof 有权
标题翻译：具有多部分碳基保护层的磁记录介质及其装置
公开(公告)号：US07208236B2
公开(公告)日：2007-04-24
申请号：US11123065
申请日：2005-05-06
申请人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
发明人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
IPC分类号： G11B5/127 , G11B5/725
CPC分类号： G11B5/72 , Y10T428/1179 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium which comprises a substrate (1), a magnetic layer (3) formed on the substrate, a carbon-based protection layer (4) comprising carbon and formed on the magnetic layer, and a lubrication layer (5) formed on the carbon-based protection layer, the carbon-based protection layer comprises a hydrogenated carbon protection layer (4a) facing the magnetic layer and a nitrogenated carbon protection layer (4b) facing the lubrication layer. The hydrogenated carbon protection layer (4a) comprises carbon and hydrogen. The nitrogenated carbon protection layer (4b) includes no hydrogen but comprises carbon and nitrogen.
摘要翻译：在包括基板（1）的磁记录介质中，形成在基板上的磁性层（3），包含碳并形成在磁性层上的碳基保护层（4）以及形成的润滑层（5）在碳基保护层上，碳基保护层包括面向磁性层的氢化碳保护层（4a）和面向润滑层的氮化碳保护层（4b）。氢化碳保护层（4a）包含碳和氢。氮化碳保护层（4b）不包括氢，而是包括碳和氮。

9. 发明授权

US06946191B2 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06946191B2
公开(公告)日：2005-09-20
申请号：US10370722
申请日：2003-02-24
申请人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
发明人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , Y10T428/1179 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium which comprises a substrate (1), a magnetic layer (3) formed on the substrate, a carbon-based protection layer (4) comprising carbon and formed on the magnetic layer, and a lubrication layer (5) formed on the carbon-based protection layer, the carbon-based protection layer comprises a hydrogenated carbon protection layer (4a) facing the magnetic layer and a nitrogenated carbon protection layer (4b) facing the lubrication layer. The hydrogenated carbon protection layer (4a) comprises carbon and hydrogen. The nitrogenated carbon protection layer (4b) includes no hydrogen but comprises carbon and nitrogen.
摘要翻译：在包括基板（1）的磁记录介质中，形成在基板上的磁性层（3），包含碳并形成在磁性层上的碳基保护层（4）和形成的润滑层（5）在碳基保护层上，碳基保护层包括面向磁性层的氢化碳保护层（4a）和面向润滑层的氮化碳保护层（4b）。氢化碳保护层（4a）包含碳和氢。氮化碳保护层（4b）不包括氢，而是包括碳和氮。

10. 发明申请

US20090023017A1 MAGNETIC DISK 有权
标题翻译：磁性盘
公开(公告)号：US20090023017A1
公开(公告)日：2009-01-22
申请号：US12161626
申请日：2007-01-22
申请人： Hiroshi Tomiyasu , Koichi Shimokawa
发明人： Hiroshi Tomiyasu , Koichi Shimokawa
IPC分类号： G11B5/65
CPC分类号： G11B5/725 , C10M147/00 , C10M153/04 , C10M2213/0606 , C10M2223/08 , C10N2240/204 , C10M2223/083
摘要： Disclosed is a magnetic disk which has a lubricant layer with excellent heat resistance and high adhesiveness and is free from fly-stiction failure or corrosion failure even at an extremely low flying height of 10 nm or lower. Also disclosed is a magnetic disk which has a lubricant layer with good thermal properties and can exert a stable action over a wide temperature range. The magnetic disk comprises a substrate (1), and a magnetic layer (3), a carbon-containing protective layer (4) and a lubricant layer (5) provided on the substrate (1), wherein the lubricant layer (5) contains a magnetic disk lubricant comprising a compound having a phosphazene ring and two or more hydroxyl and/or carboxyl groups in the molecule.
摘要翻译：公开了一种具有优异的耐热性和高粘合性的润滑剂层的磁盘，即使在10nm以下的飞行高度极低的情况下，也不会发生飞虱故障或腐蚀破坏。还公开了一种磁盘，其具有热性能良好的润滑剂层，并且可以在宽的温度范围内发挥稳定的作用。磁盘包括基板（1）和设置在基板（1）上的磁性层（3），含碳保护层（4）和润滑层（5），其中润滑剂层（5）包含包含在分子中具有磷腈环和两个或多个羟基和/或羧基的化合物的磁盘润滑剂。

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