公开(公告)号：US07869160B1

公开(公告)日：2011-01-11

申请号：US11116658

申请日：2005-04-27

Applicant: Tao Pan ,  Kroum S. Stoev ,  Yugang Wang ,  Jack M. Chue

Inventor： Tao Pan ,  Kroum S. Stoev ,  Yugang Wang ,  Jack M. Chue

IPC: G11B5/23 ,  G11B5/187 ,  G11B5/31 ,  G11B5/39

CPC classification number: G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/3146 ,  G11B5/3163

Abstract: A perpendicular recording head is provided having a bottom pole, a writer pole disposed above the bottom pole, and a top shield disposed above the writer pole. The bottom pole and the top shield are both magnetically coupled to the writer pole. The writer pole includes a concave facing surface that faces the top shield. The top shield can include a convex surface that faces the writer pole. The top shield can also include a pedestal that protrudes towards the writer pole.

Abstract translation: 设置有垂直记录头，其具有底极，设置在底极上方的写入极和设置在写入极上方的顶部屏蔽。 底极和顶部屏蔽都与磁极耦合。 写入器极包括面向顶部屏蔽的面向凹面的表面。 顶部屏蔽件可以包括面向写入极的凸面。 顶部屏蔽还可以包括朝着写入杆突出的基座。

公开(公告)号：US20100002335A1

公开(公告)日：2010-01-07

申请号：US12430653

申请日：2009-04-27

Applicant: Matthew P. Dugas

Inventor： Matthew P. Dugas

IPC: G11B5/265 ,  B32B37/02

CPC classification number: G11B5/23 ,  G11B5/127 ,  G11B5/1276 ,  G11B5/193 ,  G11B5/232 ,  G11B5/235 ,  G11B5/29 ,  G11B5/295 ,  G11B5/3116 ,  G11B5/4893 ,  G11B5/584 ,  G11B20/1211 ,  G11B20/1217 ,  Y10T29/49055 ,  Y10T29/49057

Abstract: A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.

Abstract translation: 通过从相对的铁素体块形成衬底来制造薄膜磁记录头，所述铁氧体块在它们之间具有陶瓷构件。 然后将该结构切成多个柱，其中每个柱具有铁素体/陶瓷组合。 每列表示完成的头中的单个通道。 然后切割一块陶瓷以匹配柱状结构，并将两个结合在一起。 然后将接合结构切割或研磨直到形成头部，其中陶瓷设置在每个通道之间。 然后将铁氧体背隙添加到每个通道，使磁通路径的磁阻最小化。 该薄膜在头部被图案化以优化各种通道配置。

公开(公告)号：US20080218903A1

公开(公告)日：2008-09-11

申请号：US12125767

申请日：2008-05-22

Applicant: Robert Glenn Biskeborn

Inventor： Robert Glenn Biskeborn

IPC: G11B5/187

CPC classification number: G11B5/1871 ,  G11B5/00826 ,  G11B5/10 ,  G11B5/23 ,  G11B5/255 ,  G11B5/40

Abstract: A magnetic head according to one embodiment includes a first module having a flat profile tape bearing surface, a second module having a flat profile tape bearing surface, and a third module having a flat profile tape bearing surface. The third module is positioned on an opposite side of the second module than the first module. The tape bearing surfaces of the first, second and third modules may lie along substantially parallel planes, may be configured in a tangent (angled) configuration, or may be configured in an overwrap configuration. Data writing and reading functions are usually performed by different modules at a given time.

Abstract translation: 根据一个实施例的磁头包括具有平坦轮廓带轴承表面的第一模块，具有平坦轮廓带轴承表面的第二模块和具有平坦轮廓带轴承表面的第三模块。 第三模块位于第二模块的与第一模块相反的一侧。 第一模块，第二模块和第三模块的磁带支承表面可以沿着基本上平行的平面布置，可以被配置成切线（有角度的）配置，或者可以被配置为外包装配置。 数据写入和读取功能通常在给定时间由不同的模块执行。

公开(公告)号：US07414811B2

公开(公告)日：2008-08-19

申请号：US11213366

申请日：2005-08-26

Applicant: Robert Glenn Biskeborn

Inventor： Robert Glenn Biskeborn

IPC: G11B15/60 ,  G11B5/187

CPC classification number: G11B5/1871 ,  G11B5/00826 ,  G11B5/10 ,  G11B5/23 ,  G11B5/255 ,  G11B5/40

Abstract: A magnetic head according to one embodiment includes a first module having a flat profile tape bearing surface, a second module having a flat profile tape bearing surface, and a third module having a flat profile tape bearing surface. The third module is positioned on an opposite side of the second module than the first module. The tape bearing surfaces of the first, second and third modules may lie along substantially parallel planes, may be configured in a tangent (angled) configuration, or may be configured in an overwrap configuration. Data writing and reading functions are usually performed by different modules at a given time.

Abstract translation: 根据一个实施例的磁头包括具有平坦轮廓带轴承表面的第一模块，具有平坦轮廓带轴承表面的第二模块和具有平坦轮廓带轴承表面的第三模块。 第三模块位于第二模块的与第一模块相反的一侧。 第一模块，第二模块和第三模块的磁带支承表面可以沿着基本上平行的平面布置，可以被配置成切线（有角度的）配置，或者可以被配置为外包装配置。 数据写入和读取功能通常在给定时间由不同的模块执行。

公开(公告)号：US20060230602A1

公开(公告)日：2006-10-19

申请号：US11104212

申请日：2005-04-11

Applicant: Wen-Chien Hsiao ,  Terence Lam ,  Yinshi Liu ,  Michael Yang ,  Samuel Yuan

Inventor： Wen-Chien Hsiao ,  Terence Lam ,  Yinshi Liu ,  Michael Yang ,  Samuel Yuan

IPC: G11B5/127 ,  H04R31/00 ,  G11B5/187

CPC classification number: G11B5/3116 ,  G11B5/23 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: Embodiments of the present invention recite a process for fabricating a write gap structure for a magnetic recording head. In one embodiment, at least one layer of inert material is deposited which is disposed proximate to the P2 pole of a magnetic recording head. A layer of magnetic material is deposited which is disposed between the layer of inert material and the P1 pedestal (P1P) of the magnetic recording head. In embodiments of the present invention, a second layer of inert material is deposited which is disposed between the layer of magnetic material and the P1P of the magnetic recording head. In embodiments of the present invention, the throat height of the write gap structure is defined wherein the layer of magnetic material and the inert layer only overlie a portion of the P1 pedestal of the magnetic recording head.

公开(公告)号：US20060152853A1

公开(公告)日：2006-07-13

申请号：US11333761

申请日：2006-01-17

Applicant: Matthew Dugas

Inventor： Matthew Dugas

IPC: G11B5/78

CPC classification number: G11B5/59633 ,  G11B5/23 ,  G11B5/232 ,  G11B5/295 ,  G11B5/3116 ,  G11B5/3133 ,  G11B5/3163 ,  G11B5/3166 ,  G11B5/3183 ,  G11B5/58 ,  G11B5/584 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49055 ,  Y10T29/49057 ,  Y10T29/4906 ,  Y10T29/49067 ,  Y10T428/31826

Abstract: A thin film magnetic recording head utilizing a timing based servo pattern is fabricated using a focused ion beam (FIB). The recording head is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing based pattern, is defined on the thin film and the FIB cuts a gap through the thin film based on that pattern. Once completed, the recording head is used to write a servo track onto magnetic tape. The timing based servo track then allows for the precise alignment of data read heads based on the positional information obtained by a servo read head which scans the continuously variable servo track.

Abstract translation: 使用聚焦离子束（FIB）制造利用基于定时的伺服图案的薄膜磁记录头。 通过将导磁薄膜溅射到基底上来制造记录头。 间隙图案，优选基于时序的图案被限定在薄膜上，并且FIB基于该图案切割穿过薄膜的间隙。 一旦完成，记录头用于将伺服轨迹写入磁带。 基于定时的伺服磁道然后基于扫描连续可变伺服磁道的伺服读取头获得的位置信息，允许数据读取头的精确对准。

公开(公告)号：US20060051620A1

公开(公告)日：2006-03-09

申请号：US11223407

申请日：2005-09-09

Applicant: Tatsuya Hinoue ,  Jo Inagaki ,  Hiroyuki Suzuki ,  Kohei Tozawa

Inventor： Tatsuya Hinoue ,  Jo Inagaki ,  Hiroyuki Suzuki ,  Kohei Tozawa

IPC: G11B5/66 ,  G11B5/23

CPC classification number: G11B5/7325 ,  G11B5/23 ,  G11B5/656 ,  G11B5/66

Abstract: A magnetic recording medium for attaining high areal recording density and a magnetic recording apparatus are provided. In one embodiment, a magnetic recording medium is provided which includes underlayers, a first magnetic layer, a first intermediate layer, a second magnetic layer, a second intermediate layer, a third magnetic layer, a protective layer and a lubricant layer formed in sequence on a substrate. The first magnetic layer comprises a cobalt-based alloy, and the second magnetic layer and the third magnetic layer each comprises a Co-based alloy containing platinum, chromium and boron. The concentration of chromium contained in the third magnetic layer is less than that in the second magnetic layer, the concentration of chromium contained in the third magnetic layer is about 15 at. % or less, and the first intermediate layer comprises ruthenium or an alloy having ruthenium as a main ingredient.

Abstract translation: 提供了用于实现高面积记录密度的磁记录介质和磁记录装置。 在一个实施例中，提供了一种磁记录介质，其包括底层，第一磁性层，第一中间层，第二磁性层，第二中间层，第三磁性层，保护层和润滑剂层， 底物。 第一磁性层包括钴基合金，第二磁性层和第三磁性层各自包含含有铂，铬和硼的Co基合金。 第三磁性层中含有的铬的浓度小于第二磁性层中的铬浓度，第三磁性层中含有的铬的浓度为约15at。 ％以下，第一中间层包含钌或以钌为主要成分的合金。

公开(公告)号：US20040240107A9

公开(公告)日：2004-12-02

申请号：US09755730

申请日：2001-01-05

Inventor： Sakhrat Khizroev ,  Dmitri Litvinov ,  Earl Chrzaszcz Johns

IPC: G11B005/127

CPC classification number: G11B5/3116 ,  G11B5/127 ,  G11B5/187 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/232

Abstract: A longitudinal recording head for use with magnetic recording media includes a gapless yoke with a cavity that expels magnetic flux onto a small area of the magnetic recording medium. Longitudinal recording heads incorporating the gapless yoke and flux cavity are capable of improved recording densities.

Abstract translation: 与磁记录介质一起使用的纵向记录头包括具有将磁通量排出到磁记录介质的小区域上的空腔的无间隙磁轭。 结合无间隙磁轭和磁通腔的纵向记录头能够改善记录密度。

公开(公告)号：US20040174628A1

公开(公告)日：2004-09-09

申请号：US10793502

申请日：2004-03-04

Inventor： Theodore A. Schwarz ,  Matthew P. Dugas

IPC: G11B005/09 ,  G11B021/02 ,  G11B020/20

CPC classification number: G11B5/2651 ,  G11B5/00813 ,  G11B5/23 ,  G11B5/2652 ,  G11B5/3103 ,  G11B5/313 ,  G11B5/4893 ,  G11B5/54 ,  G11B5/5504 ,  G11B5/5513 ,  G11B20/1205

Abstract: Large angle azimuth recording methods and devices. In one aspect of the invention methods of recording one or data tracks having data transitions oriented at a large azimuth angle are provided. In another aspect of the invention methods of reading a data track having data transitions oriented at a large azimuth angle are provided. Such methods include steps of suppressing a side track signal. In other aspects of the invention, head modules and devices for writing and/or reading large azimuth angle data tracks are provided.

Abstract translation: 大角度方位记录方法和装置。 在本发明的一个方面，提供了记录具有朝向大方位角的数据转换的一个或数据轨道的方法。 在本发明的另一方面，提供了读取具有以大方位角定向的数据转换的数据轨道的方法。 这样的方法包括抑制侧轨道信号的步骤。 在本发明的其他方面，提供了用于写入和/或读取大方位角数据轨道的头模块和装置。

公开(公告)号：US20030214753A1

公开(公告)日：2003-11-20

申请号：US10147565

申请日：2002-05-15

Inventor： Yimin Hsu ,  Ching Hwa Tsang

IPC: G11B005/23

CPC classification number: G11B5/3116 ,  G11B5/09 ,  G11B5/187 ,  G11B5/23 ,  G11B5/313 ,  G11B5/3143 ,  G11B5/3146 ,  G11B5/3967 ,  G11B5/488 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0026

Abstract: A thin film inductive write head for magnetic recording has a write gap formed as a lamination of alternating layers of a nonmagnetic gap layer and a ferromagnetic spacer layer. There are N gap layers and Nnull1 spacer layers, with each pole tip of the write head being located adjacent to a gap layer. The spacer layers in the gap structure are formed of a ferromagnetic material with a high saturation moment density (BS) that is close to the BS of the spacer material from which the pole tips are formed. Unlike the pole tips, the spacer layers are not part of a magnetic circuit and are magnetically isolated, i.e., completely surrounded by nonmagnetic gap material. The effect of the spacer layers is to effectively divide the gap into a plurality of smaller gaps. The write head with the laminated gap creates a write bubble that is narrower in the off-track direction and wider in the in-track direction.

Abstract translation: 用于磁记录的薄膜感应写头具有形成为非磁性间隙层和铁磁间隔层的交替层的叠层的写间隙。 存在N个间隙层和N-1间隔层，写头的每个极尖位于邻近间隙层的位置。 间隙结构中的间隔层由具有高的饱和磁矩密度（BS）的铁磁材料形成，其接近形成极尖的间隔材料的BS。 与极尖不同，间隔层不是磁路的一部分，并且是磁隔离的，即被非磁性间隙材料完全包围。 间隔层的作用是将间隙有效地分成多个较小间隙。 具有层压间隙的写头产生在偏离磁道方向上较窄的写入气泡，并且在轨道内方向上较宽。