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1. 发明专利

JP2007193944A Magnetic recording device, magnetic recording system, and magnetic recording medium 有权
标题翻译：磁记录装置，磁记录系统和磁记录介质
公开(公告)号：JP2007193944A
公开(公告)日：2007-08-02
申请号：JP2007118735
申请日：2007-04-27
申请人： Komag Inc , コマーグ・インコーポレーテッド
发明人： NCNEIL MICHAEL , VICARS JOHN , WACHENSCHWANZ DAVID
IPC分类号： G11B5/012 , G11B5/65 , G11B5/00 , G11B5/02 , G11B5/73 , G11B5/82 , G11B5/84 , G11B20/10 , G11B20/12
CPC分类号： G11B5/7325
摘要： PROBLEM TO BE SOLVED: To provide a new magnetic recording system for recording data precisely.
SOLUTION: A magnetic recording system includes a patterned medium comprised of land areas and trough areas, a write element which writes the data to the patterned medium, and a read element which reads the data from the patterned medium and servo information from the troughs. The land areas store data and the trough areas inhibit storage of data. The read element is wider than the write element.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于精确记录数据的新型磁记录系统。解决方案：磁记录系统包括由陆地区域和谷区域组成的图案化介质，将数据写入图案化介质的写入元件以及从图案化介质读取数据的读取元件和来自图形化介质的伺服信息波谷。陆地存储数据和谷区禁止数据存储。读元素比写入元件宽。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007200548A Perpendicular magnetic recording disk 审中-公开
标题翻译：全能磁记录盘
公开(公告)号：JP2007200548A
公开(公告)日：2007-08-09
申请号：JP2007121292
申请日：2007-05-01
申请人： Komag Inc , コマーグ・インコーポレーテッド
发明人： BERTERO GERARDO , WACHENSCHWANZ DAVID , MALHOTRA SUDHIR , VELU EMUR M
IPC分类号： G11B5/667 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/851
CPC分类号： G11B5/667 , G11B5/66 , Y10S428/90 , Y10T428/24942 , Y10T428/259 , Y10T428/265
摘要： PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording disk having a soft magnetic film disposed between a substrate and a magnetic recording layer. SOLUTION: The soft magnetic film includes a soft magnetic underlayer and one or more layer groups having a spacer layer and a soft magnetic layer disposed above the spacer layer in each layer group. The spacer layers induce anti-ferromagnetic coupling between the surrounding ferromagnetic layers. The spacer layers may comprise ruthenium. The soft magnetic layers may have a granular decoupled structure through the use of a segregate. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有设置在基板和磁记录层之间的软磁性膜的垂直磁记录盘。解决方案：软磁性膜包括软磁性底层和一层或多层具有间隔层和设置在各层组中的间隔层上方的软磁性层的层组。间隔层在周围的铁磁层之间引起反铁磁耦合。间隔层可以包含钌。软磁层可以通过使用分离体而具有颗粒分离的结构。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2004348952A Soft magnetic film for vertical recording disk 审中-公开
公开(公告)号：JP2004348952A
公开(公告)日：2004-12-09
申请号：JP2004150378
申请日：2004-05-20
申请人： Komag Inc , コマーグ・インコーポレーテッド
发明人： BERTERO GERARDO , WACHENSCHWANZ DAVID , MALHOTRA SUDHIR , VELU EMUR M
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/73 , G11B5/851
CPC分类号： G11B5/667 , G11B5/66 , Y10S428/90 , Y10T428/24942 , Y10T428/259 , Y10T428/265
摘要： PROBLEM TO BE SOLVED: To provide a vertical magnetic recording disk having a soft magnetic film provided between a substrate and a magnetic recording layer. SOLUTION: This soft magnetic film includes a soft magnetic under layer, a spacer layer and one layer or a plurality of layer groups having a soft magnetic layer arranged on a spacer layer of each layer group. The spacer layer introduces antiferromagnetic coupling between ferromagnetic layers around. The spacer layer can be made of ruthenium. The soft magnetic layer can have a decoupled granular structure by using segregation. COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2006209952A Magnetic disk and disk drive 审中-公开
标题翻译：磁盘和磁盘驱动器
公开(公告)号：JP2006209952A
公开(公告)日：2006-08-10
申请号：JP2006017938
申请日：2006-01-26
申请人： Komag Inc , コマッグ・インコーポレイテッドKomag, Inc.
发明人： WACHENSCHWANZ DAVID , TREVES DAVID
IPC分类号： G11B21/10
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59633 , G11B5/6011 , G11B5/743
摘要： PROBLEM TO BE SOLVED: To provide a discrete track recording disk.
SOLUTION: A discrete-track-recording (DTR) disk (the called "patterned" disk) has a sectored servo formed by modulation of its sidewalls in a predetermined manner, whereas the sidewalls of data sectors are not modulated in this manner. Each servo sector has two sidewalls that are each respectively modulated in two different ways. Hence, a signal from a given servo sector contains components of each of the two different modulations, even in the case of "DC" deletion initiation. The modulated servo sectors described thus dispenses with servo-writing. Moreover, data signals are read, without filtering the modulation, because data sector sidewalls are not modulated.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供离散轨道记录盘。解决方案：离散轨道记录（DTR）盘（被称为“图案化”盘）具有通过以预定方式调制其侧壁形成的扇形伺服，而数据扇区的侧壁不以这种方式被调制。每个伺服扇区具有两个分别以两种不同方式调制的侧壁。因此，即使在“DC”删除启动的情况下，来自给定伺服扇区的信号包含两个不同调制中的每一个的分量。所描述的调制伺服扇区免除了伺服写入。此外，由于数据扇区侧壁未被调制，所以数据信号被读取，而不过滤调制。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2003248902A MEDIUM WITH PATTERN 审中-公开
公开(公告)号：JP2003248902A
公开(公告)日：2003-09-05
申请号：JP2002285575
申请日：2002-09-30
申请人： KOMAG INC
发明人： MCNEIL MICHAEL , VICARS JOHN , WACHENSCHWANZ DAVID
IPC分类号： G11B5/65 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/73 , G11B5/82 , G11B5/84 , G11B20/10 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To provide a new magnetic recording system capable of recording data precisely. SOLUTION: The magnetic recording system comprises: a medium with a pattern consisting of a land area and a trough area; a writing element for writing data into this medium with the pattern; and a reading element for reading the data from this medium with the pattern and reading servo information from a trough. The land area stores the data, and the trough area prevents storing of the data. The width of the reading element is larger than that of the writing element. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003263715A MAGNETIC MEDIUM WITH IMPROVED EXCHANGE COUPLING 审中-公开
公开(公告)号：JP2003263715A
公开(公告)日：2003-09-19
申请号：JP2003031989
申请日：2003-02-10
申请人： KOMAG INC
发明人： BERTERO GERARDO , MALHOTRA SUDHIR , WACHENSCHWANZ DAVID , SHAN ZHENGSHENG , STAFFORD DONALD
IPC分类号： G11B5/64 , G11B5/66 , G11B5/667 , G11B5/738 , H01F10/16
摘要： PROBLEM TO BE SOLVED: To increase antiferromagnetic coupling between a magnetic layer and a magnetic layer without increasing noise. SOLUTION: The magnetic recording medium is provided with a substrate (102), a underlayer (104), a lower magnetic layer (106) formed on the underlayer, an intermediate layer (108), and an upper magnetic layer (110) formed on the intermediate layer. The intermediate layer is typically made of Ru to promote antiferromagnetic coupling between the upper and lower magnetic layers. The upper and lower magnetic layers are typically made of Co alloys. The lower magnetic layer has high saturation magnetization Ms to promote high exchange coupling between the upper and lower magnetic layers. The dynamic coercive force of the lower magnetic layer is lower than the exchanged magnetic field to enable rapid switching of the lower magnetic layer. COPYRIGHT: (C)2003,JPO

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