公开(公告)号：US20090297889A1

公开(公告)日：2009-12-03

申请号：US12470778

申请日：2009-05-22

Applicant: Kyoung-won NA ,  Sang-chul SUL ,  Du-hyun LEE ,  Myung-bok LEE ,  Hae-sung KIM ,  Jin-seung SOHN

Inventor： Kyoung-won NA ,  Sang-chul SUL ,  Du-hyun LEE ,  Myung-bok LEE ,  Hae-sung KIM ,  Jin-seung SOHN

IPC: G11B5/74 ,  B44C1/22

CPC classification number: G11B5/865 ,  G11B5/855 ,  Y10S977/856 ,  Y10S977/887

Abstract: Provided are a master recording medium and a method of manufacturing the master recording medium. The master recording medium includes: a plate; and a magnetic layer which is formed on the plate for magnetically transferring of a servo pattern that is to be formed on a magnetic recording medium. The method of manufacturing a master recording medium includes: engraving a polymer layer by nano imprinting to form an engraved pattern corresponding to a servo pattern to be formed on a magnetic recording medium; forming a magnetic layer which fills in the engraved pattern of the polymer layer; forming a back plate layer on the magnetic layer; and performing processing to expose the servo pattern on a surface of the magnetic layer that is opposite a surface of the magnetic layer on which the back plate layer is formed.

Abstract translation: 提供了主记录介质和制造主记录介质的方法。 主记录介质包括：板; 以及磁性层，其形成在用于磁性传送待形成在磁记录介质上的伺服图案的板上。 制造主记录介质的方法包括：通过纳米压印雕刻聚合物层以形成对应于要形成在磁记录介质上的伺服图案的雕刻图案; 形成填充聚合物层的雕刻图案的磁性层; 在所述磁性层上形成背板层; 以及执行处理以在与形成有背板层的磁性层的表面相对的磁性层的表面上露出伺服图案。

公开(公告)号：US20080084635A1

公开(公告)日：2008-04-10

申请号：US11748566

申请日：2007-05-15

Applicant: Du-hyun LEE ,  Seong-yong YOON ,  Jin-seung SOHN ,  Byung-kyu LEE

Inventor： Du-hyun LEE ,  Seong-yong YOON ,  Jin-seung SOHN ,  Byung-kyu LEE

IPC: G11B5/82

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/743 ,  G11B5/855

Abstract: Provided are a magnetic recording medium and a method of manufacturing the magnetic recording medium. The magnetic recording medium includes a substrate, a soft magnetic underlayer formed on the substrate, a texturing layer formed on the soft magnetic underlayer and including a uniform pattern, and a recording layer including magnetic grains and a non-magnetic boundary region isolating the magnetic grains. The magnetic grains and the non-magnetic boundary region of the recording layer are formed into a regular granular structure by segregation according to the regular pattern of the texturing layer. Therefore, a regular granular structure can be formed in the recording layer without a process such as etching of the recording layer, so that the recording density of the magnetic recording medium can be largely improved.

Abstract translation: 提供磁记录介质和制造磁记录介质的方法。 磁记录介质包括基板，形成在基板上的软磁性底层，形成在软磁性底层上的包含均匀图案的纹理层，以及包括磁性颗粒和磁性颗粒隔离的非磁性边界区域的记录层 。 根据纹理层的规则图案，记录层的磁性颗粒和非磁性边界区域通过偏析形成规则的颗粒结构。 因此，可以在记录层中形成规则的颗粒结构，而不需要诸如蚀刻记录层的处理，从而可以大大提高磁记录介质的记录密度。

公开(公告)号：US20080050616A1

公开(公告)日：2008-02-28

申请号：US11713730

申请日：2007-03-05

Applicant: Myung-bok Lee ,  Jin-seung Sohn ,  Byung-kyu Lee ,  Du-hyun Lee

Inventor： Myung-bok Lee ,  Jin-seung Sohn ,  Byung-kyu Lee ,  Du-hyun Lee

IPC: G11B5/66 ,  B05D5/12

CPC classification number: G11B5/855 ,  G11B5/66 ,  G11B5/7379 ,  G11B5/858 ,  H01F10/123 ,  H01F10/16 ,  H01F10/265 ,  H01F41/34

Abstract: Provided are a method of manufacturing a magnetic layer, a patterned magnetic recording medium including magnetic layers formed using the method, and a method of manufacturing the patterned magnetic recording medium. The method of manufacturing the magnetic layers includes: forming a template provided with an opening; forming a seed layer on a bottom of the opening; and inserting a magnetic material onto the seed layer to form a magnetic layer. The patterned magnetic recording medium includes a lower layer formed on a substrate; a template formed on the lower layer and including a plurality of holes exposing the lower layer; seed layers covering the lower layer exposed through the holes; and magnetic layers formed on the seed layers to fill the holes.

Abstract translation: 提供了一种制造磁性层的方法，包括使用该方法形成的磁性层的图案化磁记录介质以及制造图案化磁记录介质的方法。 制造磁性层的方法包括：形成设置有开口的模板; 在开口的底部形成种子层; 以及将磁性材料插入种子层以形成磁性层。 图案化的磁记录介质包括形成在基板上的下层; 模板，其形成在下层上并且包括暴露下层的多个孔; 覆盖通过孔露出的下层的种子层; 以及形成在种子层上以填充孔的磁性层。