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1. 发明授权

US08559131B2 Perpendicular magnetic recording media and magnetic disc apparatus 有权
标题翻译：垂直磁记录介质和磁盘设备
公开(公告)号：US08559131B2
公开(公告)日：2013-10-15
申请号：US13161394
申请日：2011-06-15
申请人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
发明人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
IPC分类号： G11B5/127
CPC分类号： G11B5/667 , G11B5/012 , G11B2005/0021
摘要： [Problem] A perpendicular magnetic recording medium and a magnetic disk device that are suitable for a shingle recording type are provided.[Solution] The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium for a shingle recording type having a laminated film including a soft magnetic layer 13 and a main recording layer 16 formed on base 11, the soft magnetic layer 13 having a thickness found from a core width of a magnetic head for recording and reproduction with respect to the perpendicular magnetic recording medium and a track pitch narrower than the core width.
摘要翻译： [问题]提供了适用于瓦楞记录型的垂直磁记录介质和磁盘装置。 [解决方案]本发明的垂直磁记录介质是用于瓦片记录型的垂直磁记录介质，其具有包括形成在基底11上的软磁层13和主记录层16的层叠膜，软磁层13具有从用于记录和再现相对于垂直磁记录介质的磁头的磁芯宽度发现的厚度和比磁芯宽度窄的轨道间距。

2. 发明申请

US20120162808A1 Perpendicular magnetic recording media and magnetic disc apparatus 有权
标题翻译：垂直磁记录介质和磁盘设备
公开(公告)号：US20120162808A1
公开(公告)日：2012-06-28
申请号：US13161394
申请日：2011-06-15
申请人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
发明人： Daisuke Masuda , Chiyo Saito , Junichi Horikawa , Iwao Okamoto
IPC分类号： G11B5/09 , G11B5/82 , G11B21/02
CPC分类号： G11B5/667 , G11B5/012 , G11B2005/0021
摘要： [Problem] A perpendicular magnetic recording medium and a magnetic disk device that are suitable for a shingle recording type are provided.[Solution] The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium for a shingle recording type having a laminated film including a soft magnetic layer 13 and a main recording layer 16 formed on base 11, the soft magnetic layer 13 having a thickness found from a core width of a magnetic head for recording and reproduction with respect to the perpendicular magnetic recording medium and a track pitch narrower than the core width.
摘要翻译： [问题]提供了适用于瓦楞记录型的垂直磁记录介质和磁盘装置。 [解决方案]本发明的垂直磁记录介质是用于瓦片记录型的垂直磁记录介质，其具有包括形成在基底11上的软磁层13和主记录层16的层叠膜，软磁层13具有从用于记录和再现相对于垂直磁记录介质的磁头的磁芯宽度发现的厚度和比磁芯宽度窄的轨道间距。

3. 发明授权

US08922936B2 Apparatus of single write magnetic disc 有权
标题翻译：单写磁盘装置
公开(公告)号：US08922936B2
公开(公告)日：2014-12-30
申请号：US13071132
申请日：2011-03-24
申请人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
发明人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
IPC分类号： G11B15/18 , G11B5/02 , G11B21/02 , G11B5/012 , G11B5/127 , G11B5/09
CPC分类号： G11B5/012 , G11B5/09 , G11B5/1278
摘要： An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system.In a magnetic disk apparatus including a magnetic disk, a recording head that writes information on the magnetic disk, and a controller that controls a writing operation of the recording head to the magnetic disk, the controller controls the writing operation such that the recording head writes information on a region including a target track and a portion of track adjacent thereto in an overlapping manner while position-shifting in a radial direction of the magnetic disk and a first writing frequency to a track on which information is last written is higher than a second writing frequency to another track.
摘要翻译：本发明的目的是进一步提高使用瓦片写入系统的磁盘装置中的记录密度。在包括磁盘的磁盘装置，在磁盘上写入信息的记录头以及控制记录头对磁盘的写入操作的控制器中，控制器控制写入操作使得记录头写入关于包括目标轨道和与其相邻的轨道的一部分的区域的信息，当在磁盘的径向方向上的位置移位和对最后写入信息的轨道的第一写入频率高于第二将频率写入另一个轨道。

4. 发明申请

US20120069466A1 APPARATUS OF MAGNETIC DISC 有权
标题翻译：磁盘设备
公开(公告)号：US20120069466A1
公开(公告)日：2012-03-22
申请号：US13071132
申请日：2011-03-24
申请人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
发明人： Iwao Okamoto , Chiyo Saito , Daisuke Masuda
IPC分类号： G11B5/55
CPC分类号： G11B5/012 , G11B5/09 , G11B5/1278
摘要： An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system.In a magnetic disk apparatus including a magnetic disk, a recording head that writes information on the magnetic disk, and a controller that controls a writing operation of the recording head to the magnetic disk, the controller controls the writing operation such that the recording head writes information on a region including a target track and a portion of track adjacent thereto in an overlapping manner while position-shifting in a radial direction of the magnetic disk and a first writing frequency to a track on which information is last written is higher than a second writing frequency to another track.
摘要翻译：本发明的目的是进一步提高使用瓦片写入系统的磁盘装置中的记录密度。在包括磁盘的磁盘装置，在磁盘上写入信息的记录头以及控制记录头对磁盘的写入操作的控制器中，控制器控制写入操作使得记录头写入关于包括目标轨道和与其相邻的轨道的一部分的区域的信息，当在磁盘的径向方向上的位置移位和对最后写入信息的轨道的第一写入频率高于第二将频率写入另一个轨道。

5. 发明申请

US20050136291A1 Magnetic recording medium, recording method and magnetic storage apparatus 审中-公开
标题翻译：磁记录介质，记录方法和磁存储装置
公开(公告)号：US20050136291A1
公开(公告)日：2005-06-23
申请号：US10975936
申请日：2004-10-28
申请人： Iwao Okamoto , Hisashi Umeda
发明人： Iwao Okamoto , Hisashi Umeda
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/738 , G11B5/72
CPC分类号： G11B5/66 , G11B5/656
摘要： A magnetic recording medium is provided with first and second ferromagnetic layers which are exchange-coupled via a first nonmagnetic coupling layer and have mutually parallel magnetizations. The second ferromagnetic layer and a magnetic layer are exchange-coupled via a second nonmagnetic coupling layer and have magnetizations which are mutually antiparallel. The first and second ferromagnetic layers and the magnetic layer respectively have dynamic coercivities Hc1′, Hc2′ and Hc3′ which satisfy a relationship Hc1′
摘要翻译：磁记录介质设置有第一和第二铁磁层，其经由第一非磁性耦合层交换耦合并且具有相互平行的磁化。第二铁磁层和磁性层通过第二非磁性耦合层进行交换耦合，并具有相互反平行的磁化。第一和第二铁磁层和磁性层分别具有在记录磁场的切换时间区域中满足关系Hc 1'

6. 发明授权

US06753101B1 Magnetic recording medium, magnetic storage apparatus, recording method and method of producing magnetic recording medium 失效
标题翻译：磁记录介质，磁存储装置，制造磁记录介质的记录方法和方法
公开(公告)号：US06753101B1
公开(公告)日：2004-06-22
申请号：US09588850
申请日：2000-06-06
申请人： E. Noel Abarra , Iwao Okamoto , Yoshifumi Mizoshita , Yuki Yoshida
发明人： E. Noel Abarra , Iwao Okamoto , Yoshifumi Mizoshita , Yuki Yoshida
IPC分类号： G11B566
CPC分类号： G11B5/66 , G11B5/74 , G11B5/82 , G11B2005/0002 , Y10S428/90 , Y10T428/24942 , Y10T428/265
摘要： A magnetic recording medium is provided with at least one exchange layer structure, and a magnetic layer formed on the exchange layer structure. The exchange layer structure includes a ferromagnetic layer and a non-magnetic coupling layer provided on the ferromagnetic layer and under the magnetic layer.
摘要翻译：磁记录介质具有至少一个交换层结构和形成在交换层结构上的磁性层。交换层结构包括铁磁层和设置在铁磁层上和磁层下面的非磁性耦合层。

7. 发明授权

US06740383B2 Magnetic recording medium possessing a ratio of Hc(perpendicular) to Hc(horizontal) that is not more than 0.22 and magnetic recording disk device 失效
标题翻译：具有Hc（垂直）与Hc（水平）之比不大于0.22的磁记录介质和磁记录盘装置
公开(公告)号：US06740383B2
公开(公告)日：2004-05-25
申请号：US09275578
申请日：1999-03-24
申请人： Masayoshi Shinohara , Kenji Sato , Yuki Yoshida , Iwao Okamoto , Yasuji Ikeda , Kiyoshi Yamaguchi
发明人： Masayoshi Shinohara , Kenji Sato , Yuki Yoshida , Iwao Okamoto , Yasuji Ikeda , Kiyoshi Yamaguchi
IPC分类号： G11B573
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/4886 , G11B5/656 , G11B5/72 , G11B5/7325 , G11B2005/3996 , Y10T428/24355 , Y10T428/24975
摘要： A magnetic recording medium and a magnetic disk device using the same. The magnetic recording medium comprising a nonmagnetic substrate having applied thereon, through two or more chromium-based underlayers, a magnetic recording layer having a circumferential direction of easy magnetization and containing cobalt as a principal component thereof, and also containing chromium and platinum in combination with tantalum or tantalum and niobium. Using the magnetic recording medium, a reproducing output and S/N ratio can be increased without causing an increase in noise.
摘要翻译：磁记录介质及使用其的磁盘装置。该磁记录介质包括通过两个或多个铬基底层施加在其上的非磁性基底，具有容易磁化的圆周方向并且含有钴作为其主要成分的磁记录层，并且还含有铬和铂与钽或钽和铌。使用磁记录介质，可以增加再现输出和S / N比，而不会增加噪声。

8. 发明授权

US06677051B1 Magnetic recording medium with dual magnetic layers having specific composition requirements and a magnetic storage apparatus 失效
标题翻译：具有特定组成要求的双磁性层的磁记录介质和磁存储装置
公开(公告)号：US06677051B1
公开(公告)日：2004-01-13
申请号：US09648097
申请日：2000-08-25
申请人： B. Ramamurthy Acharya , Iwao Okamoto
发明人： B. Ramamurthy Acharya , Iwao Okamoto
IPC分类号： G11B566
CPC分类号： G11B5/656 , G11B5/66 , Y10T428/12646 , Y10T428/12861 , Y10T428/12931 , Y10T428/26
摘要： A magnetic recording medium is constructed to include a substrate, and a magnetic layer disposed above the substrate, wherein the magnetic layer has an initial layer on a side closer to the substrate and a final layer on a side opposite from the substrate with respect to the initial layer. The initial layer is made of a CoCrB-based alloy having a thickness of 1 to 10 nm, and the final layer is made of a Co-based alloy having a thickness of 5 to 30 nm.
摘要翻译：磁记录介质被构造成包括基板和设置在基板上方的磁性层，其中磁性层在靠近基板的一侧具有初始层，并且相对于基板在与基板相反的一侧具有最终层初始层。初始层由厚度为1〜10nm的CoCrB系合金构成，最终层由厚度为5〜30nm的Co系合金构成。

9. 发明授权

US06645646B1 Magnetic recording medium and magnetic storage apparatus 失效
标题翻译：磁记录介质和磁存储装置
公开(公告)号：US06645646B1
公开(公告)日：2003-11-11
申请号：US09587842
申请日：2000-06-06
申请人： Hisashi Umeda , E. Noel Abarra , Iwao Okamoto , Yoshifumi Mizoshita
发明人： Hisashi Umeda , E. Noel Abarra , Iwao Okamoto , Yoshifumi Mizoshita
IPC分类号： G11B566
CPC分类号： G11B5/66 , G11B5/74 , G11B5/82 , G11B2005/0002 , Y10S428/90 , Y10T428/12465 , Y10T428/12861 , Y10T428/2495 , Y10T428/265
摘要： A magnetic recording medium is constructed to include at least one exchange layer structure and a magnetic layer provided on the exchange layer structure, where the exchange layer structure includes a ferromagnetic layer and a non-magnetic coupling layer provided on the ferromagnetic layer, and a magnetic bonding layer provided between the ferromagnetic layer and the non-magnetic coupling layer and/or between the non-magnetic coupling layer and the magnetic layer, wherein the magnetic bonding layer has a magnetization direction parallel to the ferromagnetic layer and the magnetic layer.
摘要翻译：磁记录介质被构造成包括至少一个交换层结构和设置在交换层结构上的磁性层，其中交换层结构包括强磁性层和设置在铁磁层上的非磁性耦合层，以及磁性层粘结层设置在铁磁层和非磁性耦合层之间和/或非磁性耦合层与磁性层之间，其中磁性结合层具有平行于铁磁性层和磁性层的磁化方向。

10. 发明授权

US06534204B1 Magnetic storage medium 失效
标题翻译：磁存储介质
公开(公告)号：US06534204B1
公开(公告)日：2003-03-18
申请号：US09405725
申请日：1999-09-24
申请人： Hideyuki Akimoto , Yuki Yoshida , Kenji Sato , Iwao Okamoto
发明人： Hideyuki Akimoto , Yuki Yoshida , Kenji Sato , Iwao Okamoto
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/66 , Y10S428/90
摘要： There is provided a magnetic storage medium capable of recording information at high recording density and also regenerating the information with a high quality of signal (high S/Nm), and in addition contributing to the elongation of a life span of the recorded information. The magnetic storage medium comprises a non-magnetic substrate, a plurality of magnetic recording layers of ferromagnetism formed on the non-magnetic substrate, and a dividing layer of antiferromagnetism for dividing said plurality of magnetic recording layers from one another through intervening between the magnetic recording layer-to-layer.
摘要翻译：提供了能够以高记录密度记录信息并且还以高质量信号（高S / Nm）再生信息的磁存储介质，并且还有助于延长记录信息的使用寿命。磁存储介质包括非磁性衬底，形成在非磁性衬底上的多个磁性磁记录层，以及用于通过介于磁记录之间的方式将所述多个磁记录层彼此分开的反铁磁分隔层层到层。

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