公开(公告)号：US20090141407A1

公开(公告)日：2009-06-04

申请号：US12142903

申请日：2008-06-20

申请人： Hoo-san LEE ,  Hoon-sang Oh ,  Sung-chul Lee

发明人： Hoo-san LEE ,  Hoon-sang Oh ,  Sung-chul Lee

IPC分类号： G11B5/33

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

摘要： A magnetic head and a recording apparatus employing the same are provided. The magnetic head includes a recording member, a field inducing member inducing a magnetic field to the recording member, a shield member having the same direction of magnetization as the recording member in a recording operation, and a return path member forming a magnetic path with the recording member.

摘要翻译： 提供一种磁头和采用该磁头的记录装置。 磁头包括记录部件，引起磁记录部件的磁场的场诱导部件，在记录动作中具有与记录部件相同的磁化方向的屏蔽部件，以及与该记录部件形成磁路的返回路径部件 录音成员

公开(公告)号：US20090061259A1

公开(公告)日：2009-03-05

申请号：US12039112

申请日：2008-02-28

申请人： Hoo-san LEE ,  Sung-chul LEE ,  Hoon-sang OH

发明人： Hoo-san LEE ,  Sung-chul LEE ,  Hoon-sang OH

IPC分类号： G11B5/66 ,  G11B5/65

CPC分类号： G11B5/66 ,  G11B5/855

摘要： A bit patterned medium in which an exchange coupling layer induces exchange coupling between adjacent bits in order to reduce a switching field difference resulting from different magnetization directions of bits. The exchange coupling layer is disposed either over or under a recording layer having a plurality of bits. The exchange coupling layer induces exchange coupling between a bit which is to be recorded and an adjacent bit and reduces a switching field difference resulting from a difference between the magnetization direction of the bit to be recorded and the magnetization direction of neighboring bits due to an exchange coupling force generated during the exchange coupling.

摘要翻译： 一种位图形介质，其中交换耦合层引起相邻位之间的交换耦合，以便减少由不同磁化方向引起的开关场差。 交换耦合层设置在具有多个位的记录层之上或之下。 交换耦合层引起要被记录的位和相邻位之间的交换耦合，并减少由于要记录的位的磁化方向与由于交换而产生的相邻位的磁化方向之间的差导致的开关场差 在交换耦合期间产生的耦合力。

公开(公告)号：US20090117409A1

公开(公告)日：2009-05-07

申请号：US12117766

申请日：2008-05-09

申请人： Hoo-san LEE ,  Hoon-sang Oh

发明人： Hoo-san LEE ,  Hoon-sang Oh

IPC分类号： G11B5/62 ,  G11B5/84

CPC分类号： G11B5/855

摘要： A perpendicular magnetic recording medium and a method of manufacturing the same are provided. The perpendicular magnetic recording medium includes a substrate, and a recording layer comprising a plurality of independent first magnetic body regions and a plurality of second magnetic body regions formed on the substrate, the second magnetic body regions separating the first magnetic body regions from each other, and being formed by implanting dopant into a region in which the first magnetic body regions are to be separated. Each of the first magnetic body regions has an L10 structure and the dopant has an ionic or molecular shape.

摘要翻译： 提供了一种垂直磁记录介质及其制造方法。 垂直磁记录介质包括基板和包括形成在基板上的多个独立的第一磁体区域和多个第二磁体区域的记录层，第一磁体区域将第一磁体区域彼此分开， 并且通过将掺杂剂注入到其中将要分离第一磁性体区域的区域中而形成。 每个第一磁体区域具有L10结构，并且掺杂剂具有离子或分子形状。

公开(公告)号：US20090068500A1

公开(公告)日：2009-03-12

申请号：US12061823

申请日：2008-04-03

申请人： Sok-hyun KONG ,  Sang-hwan PARK ,  Hoo-san LEE ,  Taek-dong LEE ,  Hoon-sang OH

发明人： Sok-hyun KONG ,  Sang-hwan PARK ,  Hoo-san LEE ,  Taek-dong LEE ,  Hoon-sang OH

IPC分类号： G11B5/706 ,  B05D5/12 ,  C23C14/34

CPC分类号： G11B5/66 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/851

摘要： Provided are a perpendicular magnetic recording medium and a method of manufacturing the same. The perpendicular magnetic recording medium includes: a substrate; a soft magnetic layer formed on the substrate; an underlayer formed on the soft magnetic layer; and a recording layer comprising a plurality of ferromagnetic layers and formed on the underlayer, wherein each of the plurality of ferromagnetic layers has a magnetic anisotropic energy which decreases as distance increases from the underlayer.

摘要翻译： 提供了一种垂直磁记录介质及其制造方法。 垂直磁记录介质包括：基板; 形成在所述基板上的软磁性层; 形成在软磁性层上的底层; 以及包括多个铁磁层并形成在所述底层上的记录层，其中所述多个铁磁层中的每一个具有随距离从所述底层距离增加而减小的磁各向异性能量。

公开(公告)号：US20090009903A1

公开(公告)日：2009-01-08

申请号：US11946074

申请日：2007-11-28

申请人： Hoo-san LEE ,  Hyun-jei KIM ,  Sung-hoon CHOA ,  Hoon-sang OH

发明人： Hoo-san LEE ,  Hyun-jei KIM ,  Sung-hoon CHOA ,  Hoon-sang OH

IPC分类号： G11B21/02

CPC分类号： G11B5/02 ,  G11B2005/001

摘要： Provided is a method of increasing recording density and a control apparatus for increasing the recording density. The method includes applying a recording current corresponding to a recording signal to a magnetic head of a hard disc drive (HDD), and limiting a current value being applied to the magnetic head to a critical value when the recording current reaches the critical value. In the method, a rising time is reduced by using an overshoot recording current and the recording current is limited to a critical value when an actual recording current reaches the critical value. Thus, write track widths (WTWs) can be reduced at a low recording frequency, thereby increasing tracks per inch (TPI).

摘要翻译： 提供了增加记录密度的方法和用于提高记录密度的控制装置。 该方法包括将对应于记录信号的记录电流施加到硬盘驱动器（HDD）的磁头，并且当记录电流达到临界值时将施加到磁头的电流值限制为临界值。 在该方法中，通过使用过冲记录电流来降低上升时间，并且当实际记录电流达到临界值时，记录电流被限制在临界值。 因此，可以在低记录频率下减小写轨道宽度（WTW），从而增加每英寸轨迹（TPI）。

公开(公告)号：US20090011282A1

公开(公告)日：2009-01-08

申请号：US12018820

申请日：2008-01-24

申请人： Hoo-san LEE ,  Hoon-sang OH ,  Sung-hoon CHOA

发明人： Hoo-san LEE ,  Hoon-sang OH ,  Sung-hoon CHOA

IPC分类号： G11B5/66

CPC分类号： G11B5/59627 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

摘要： A magnetic recording medium, a hard disk drive (HDD) employing the same, and a method of measuring a write read (WR) offset of the HDD are provided. The magnetic recording medium includes a disk substrate and a magnetic recording layer formed on one or both surfaces of the disk substrate, wherein the magnetic recording layer comprises: at least one pattern area patterned into a plurality of data tracks wherein the at least one pattern area is formed of a patterned magnetic substance; and at least one continuous area formed of a continuous magnetic substance, wherein the continuous area is used to measure a WR offset. Accordingly, the HDD employing the magnetic recording medium can correct the WR offset of the magnetic head without requiring large modifications.

摘要翻译： 提供一种磁记录介质，采用该记录介质的硬盘驱动器（HDD）以及测量HDD的写入读取（WR）偏移的方法。 磁记录介质包括形成在盘基片的一个或两个表面上的盘基片和磁记录层，其中磁记录层包括：图案化成多个数据道的至少一个图案区，其中至少一个图案区 由图案化的磁性物质形成; 以及由连续磁性物质形成的至少一个连续区域，其中所述连续区域用于测量WR偏移。 因此，使用磁记录介质的HDD可以校正磁头的WR偏移，而不需要大的修改。

公开(公告)号：US20090316297A1

公开(公告)日：2009-12-24

申请号：US12485150

申请日：2009-06-16

申请人： Hoo-san LEE ,  Sok-hyun Kong ,  Sung-chul Lee

发明人： Hoo-san LEE ,  Sok-hyun Kong ,  Sung-chul Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/865 ,  G11B5/59638

摘要： A servo master having a pattern capable of being magnetically transferred as a servo pattern to a magnetic recording medium, wherein the servo master is formed of a material having a magnetic anisotropic constant perpendicular to a surface of the magnetic recording medium. The magnetic transfer method can include preparing a servo master patterned with a servo pattern to be formed on a magnetic recording medium, and arranging the servo master on the magnetic recording medium and applying an external magnetic field to the servo master in a first direction perpendicular to a recording surface of the magnetic recording medium, and in a second direction parallel to the recording surface of the magnetic recording medium.

摘要翻译： 一种具有能够作为伺服图案磁转印到磁记录介质的图案的伺服主机，其中伺服主机由具有垂直于磁记录介质表面的磁各向异性常数的材料形成。 磁转移方法可以包括制备图案化的伺服母模，以形成在磁记录介质上的伺服模式，并将伺服主机布置在磁记录介质上，并在与伺服主机垂直的第一方向上向伺服主机施加外部磁场 磁记录介质的记录表面，并且在平行于磁记录介质的记录表面的第二方向上。

公开(公告)号：US20090317663A1

公开(公告)日：2009-12-24

申请号：US12485093

申请日：2009-06-16

申请人： Sok-hyun KONG ,  Hyung-ik LEE ,  Hoo-san LEE ,  Young-su CHUNG ,  Seong-yong YOON

发明人： Sok-hyun KONG ,  Hyung-ik LEE ,  Hoo-san LEE ,  Young-su CHUNG ,  Seong-yong YOON

IPC分类号： G11B5/725 ,  G11B5/72

CPC分类号： G11B5/72

摘要： Provided is a magnetic recording medium. The magnetic recording medium includes a substrate, a recording layer disposed on the substrate for magnetic recording, and a carbon protection layer, which includes a carbon layer and a blocking layer disposed in the carbon layer to block infiltration of external impurities, disposed on the recording layer. Since the blocking layer is disposed in the carbon layer, a thickness of the carbon protection layer can be reduced while a sufficient hardness to protect the recording layer can be ensured, and moreover, a softness of the surface of the carbon protection layer can be improved.

摘要翻译： 提供了一种磁记录介质。 磁记录介质包括基板，设置在用于磁记录的基板上的记录层，以及碳保护层，其包括设置在记录介质上的碳层和设置在碳层中的阻挡层以阻挡外部杂质的渗透 层。 由于阻挡层设置在碳层中，所以可以降低碳保护层的厚度，同时可以确保足够的硬度来保护记录层，而且能够提高碳保护层的表面的柔软性 。

公开(公告)号：US20090274933A1

公开(公告)日：2009-11-05

申请号：US12277416

申请日：2008-11-25

申请人： Seong-yong YOON ,  Hoo-san LEE ,  Sok-hyun KONG

发明人： Seong-yong YOON ,  Hoo-san LEE ,  Sok-hyun KONG

IPC分类号： G11B5/667 ,  G11B5/738 ,  G11B5/72

CPC分类号： G11B5/667 ,  G11B5/7379

摘要： Provided is a perpendicular magnetic recording medium. The perpendicular magnetic recording medium includes: a substrate; a soft magnetic layer disposed on the substrate; a recording layer disposed on the soft magnetic layer; and at least one hardness enhancing layer disposed in the soft magnetic layer or interposed between the soft magnetic layer and the recording layer.

摘要翻译： 提供了一种垂直磁记录介质。 垂直磁记录介质包括：基板; 设置在所述基板上的软磁性层; 设置在所述软磁性层上的记录层; 以及至少一个硬度增强层，其设置在所述软磁性层中或介于所述软磁性层和所述记录层之间。

公开(公告)号：US20090197119A1

公开(公告)日：2009-08-06

申请号：US12137318

申请日：2008-06-11

申请人： Sok-hyun KONG ,  Seong-yong YOON ,  Hoo-san LEE

发明人： Sok-hyun KONG ,  Seong-yong YOON ,  Hoo-san LEE

IPC分类号： G11B5/62

CPC分类号： G11B5/65 ,  G11B5/66 ,  G11B5/667

摘要： Provided is a perpendicular magnetic recording medium. The perpendicular magnetic recording medium includes: a substrate; a plurality of soft magnetic layers including a lower soft magnetic layer and an upper soft magnetic layer which are sequentially stacked on the substrate, wherein the upper soft magnetic layer has an anisotropic field greater than that of the lower soft magnetic layer; an isolating layer interposed between the lower and upper soft magnetic layers and preventing magnetic interaction between the lower and upper soft magnetic layers; an underlayer formed on the plurality of soft magnetic layers; and a recording layer formed on the underlayer and including a plurality of ferromagnetic layers each layer of which has a magnetic anisotropic energy which decreases as distance increases from the underlayer.

摘要翻译： 提供了一种垂直磁记录介质。 垂直磁记录介质包括：基板; 多个软磁层，包括顺序堆叠在基板上的下软磁层和上软磁层，其中上软磁层的各向异性磁场大于下软磁层的各向异性磁场; 插入在所述下软磁层和所述软磁性层之间的隔离层，并防止所述下软磁层和所述软磁性层之间的磁相互作用; 形成在所述多个软磁性层上的底层; 以及形成在所述底层上并且包括多个铁磁层的记录层，每个铁磁层具有随距离从所述底层距离增加而减小的磁各向异性能量。