公开(公告)号：US20100328816A1

公开(公告)日：2010-12-30

申请号：US12807173

申请日：2010-08-30

申请人： Lijie Guan ,  Moris Dovek ,  Joe Smyth ,  Yoshitaka Sasaki

发明人： Lijie Guan ,  Moris Dovek ,  Joe Smyth ,  Yoshitaka Sasaki

IPC分类号： G11B5/17

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

摘要： Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a side shield section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.

摘要翻译： 通过在PMR写入器中并入复合屏蔽结构来实现改进的可编写性和相邻轨迹擦除的实质性减少。 在写入磁极的上表面之上形成一定距离的尾部屏蔽件，在写入磁极的底表面下方形成一定距离的前屏蔽件，以及形成在屏蔽件的每一侧上的侧面屏蔽部分 写柱 部分侧屏蔽厚度小于写入极的厚度。 每个局部侧屏蔽部分具有平行于最近的写入极侧的一侧和从写入磁极顶部表面偏移0至0.15微米的顶部表面。 采用两个或更多个屏蔽元件之间的多个磁连接来确保正确的磁势。 大写字杆的喇叭角为45度至75度。

公开(公告)号：US07777987B2

公开(公告)日：2010-08-17

申请号：US12384691

申请日：2009-04-08

申请人： Lijie Guan ,  Hung Liang Hu ,  Yaw Shing Tang

发明人： Lijie Guan ,  Hung Liang Hu ,  Yaw Shing Tang

IPC分类号： G11B5/11

CPC分类号： G11B5/1475 ,  G11B5/1278 ,  G11B5/315 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Prior art designs of single pole writers have been limited by premature saturation at the tip. This limits the head field that can be achieved without simultaneously widening the write profile. This problem has bee solved by means of a vertical main pole whose thickness has its conventional value a short distance from the tip but that tapers down to a significantly reduced value as it approaches the tip. A process for manufacturing this tapered tip design is also presented.

摘要翻译： 单极写入器的现有技术设计已经受到尖端处的过早饱和的限制。 这限制了可以实现的头部场，而不会同时加宽写入轮廓。 这个问题已经通过一个垂直的主极来解决，该垂直主极的厚度具有与尖端相距很短的常规值，但随着接近尖端而逐渐减小到显着降低的值。 还提出了一种用于制造该锥形尖端设计的工艺。

公开(公告)号：US07609479B2

公开(公告)日：2009-10-27

申请号：US11372259

申请日：2006-03-10

申请人： Yoshitaka Sasaki ,  Hiroyuki Itoh ,  Dong-Hong Li ,  Joseph Smyth ,  Lijie Guan ,  Yaw-Shing Tang

发明人： Yoshitaka Sasaki ,  Hiroyuki Itoh ,  Dong-Hong Li ,  Joseph Smyth ,  Lijie Guan ,  Yaw-Shing Tang

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3163

摘要： A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field for writing data on a recording medium by using a perpendicular magnetic recording system. A shield incorporates: a first layer having an end face located in a region of the medium facing surface forward of the end face of the pole layer along the direction of travel of the recording medium; a second layer disposed in a region sandwiching the pole layer with the first layer; a first coupling portion coupling the first layer to the second layer without touching the pole layer; and a second coupling portion coupling the pole layer to the second layer and located farther from the medium facing surface than the first coupling portion.

摘要翻译： 极层具有位于介质相对表面中的端面，允许对应于由线圈产生的磁场的磁通量通过其中，并且通过使用垂直磁记录产生用于将数据写入记录介质的写入磁场 系统。 屏蔽包括：第一层，其具有沿着记录介质的行进方向位于所述极层的端面的前面的介质面向表面的区域中的端面; 第二层，设置在将所述极层与所述第一层夹在中间的区域中; 第一耦合部分，其将所述第一层耦合到所述第二层，而不接触所述极层; 以及第二耦合部分，其将所述极层耦合到所述第二层并且位于比所述第一耦合部更远离所述介质面对表面。

公开(公告)号：US07460342B2

公开(公告)日：2008-12-02

申请号：US11074416

申请日：2005-03-08

申请人： Lijie Guan ,  Yaw-Shing Tang ,  Ellis Cha

发明人： Lijie Guan ,  Yaw-Shing Tang ,  Ellis Cha

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  Y10T29/49046 ,  Y10T29/49048

摘要： The inadvertent introduction of stray fields at the media surface by the shields that form part of a magnetic read-write head has been eliminated by using a combination of masking and ion milling to remove small amounts of material close to the shields' outer edges. As a consequence, instead of presenting a sharp edge to the ABS, a shield's lower surface slopes gently away from it.

摘要翻译： 通过使用掩模和离子铣削的组合来除去形成磁性读写头的一部分的屏蔽，在介质表面上无意中引入杂散场已经消除，以去除靠近屏蔽外边缘的少量材料。 因此，屏蔽层的下表面不是向ABS呈现锋利的边缘，而是轻轻地远离其。

公开(公告)号：US20080273277A1

公开(公告)日：2008-11-06

申请号：US11787016

申请日：2007-04-13

申请人： Lijie Guan ,  Moris Dovek ,  Joe Smyth ,  Yoshitaka Sasaki

发明人： Lijie Guan ,  Moris Dovek ,  Joe Smyth ,  Yoshitaka Sasaki

IPC分类号： G11B5/33 ,  G11B5/127

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

摘要： Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface of the write pole, and a partial side shield having a section formed on each side of the write pole. The partial side shield thickness is less than that of the write pole. Each partial side shield section has a side that is parallel to the nearest write pole side and a top surface that is offset from the write pole top surface by 0 to 0.15 microns. A plurality of magnetic connections between two or more shield elements is employed to ensure correct magnetic potential. The large write pole has a flare angle of 45 to 75 degrees.

摘要翻译： 通过在PMR写入器中并入复合屏蔽结构来实现改进的可编写性和相邻轨迹擦除的实质性减少。 在写极的上表面之上形成一定距离的后屏蔽，在写极的底表面下方形成一定距离的前屏蔽，以及形成在写柱的每一侧上的部分的局部侧屏蔽 。 部分侧屏蔽厚度小于写入极的厚度。 每个局部侧屏蔽部分具有平行于最近的写入极侧的一侧和从写入磁极顶部表面偏移0至0.15微米的顶部表面。 采用两个或更多个屏蔽元件之间的多个磁连接来确保正确的磁势。 大写字杆的喇叭角为45度至75度。

公开(公告)号：US07327533B2

公开(公告)日：2008-02-05

申请号：US10980483

申请日：2004-11-03

申请人： Lijie Guan

发明人： Lijie Guan

IPC分类号： G11B5/21

CPC分类号： G11B5/1278 ,  G11B5/245 ,  G11B2005/0029

摘要： The non-zero remanence state that is associated with a single pole writer often results in self-pole-erasure (SPE). This problem has been overcome by inserting a very thin exchange de-coupling layer into the magnetic circuit of the write pole. This facilitates vortex formation at the pole tip region so the remanent field is significantly reduced, along with pole erasure. Because of the small thickness of this decoupling layer, the increase of magnetic reluctance due to the insertion of the exchange-breaking gap is negligible and the efficiency of writing is not affected.

摘要翻译： 与单极写入器相关联的非零剩磁状态通常导致自极擦除（SPE）。 通过将非常薄的交换去耦合层插入到写极的磁路中已经克服了这个问题。 这有助于极尖区域的涡流形成，从而与磁极擦除一起，剩余磁场明显减小。 由于该去耦层的厚度小，由于插入交换间隙而导致的磁阻增加可以忽略不计，写入效率不受影响。

公开(公告)号：US07106554B2

公开(公告)日：2006-09-12

申请号：US10411345

申请日：2003-04-10

申请人： Lijie Guan ,  Hung Liang Hu ,  Yaw Shing Tang ,  Kochan Ju

发明人： Lijie Guan ,  Hung Liang Hu ,  Yaw Shing Tang ,  Kochan Ju

IPC分类号： G11B5/11 ,  G11B5/187

CPC分类号： G11B5/3146 ,  G11B5/1272 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3116 ,  G11B2005/0013 ,  G11B2005/0029

摘要： Conventional perpendicular writers that utilize an extended return pole are subject to large undershoot fields. This problem has been reduced by replacing the prior art extended return pole by one whose magnetic potential has been increased relative to both the main and return poles. In a first embodiment, a second non-magnetic gap is inserted between the extended return pole and the return pole. In a second embodiment, the extended return pole is made very thin, thereby increasing its reluctance, while a third embodiment combines both reluctance-increasing features in a single design.

摘要翻译： 使用延伸返回极的常规垂直写入器受到大的下冲场。 通过将现有技术的延伸返回极替换为相对于主极和返回极两者的磁势已经增加的极点，已经减少了这个问题。 在第一实施例中，第二非磁隙插入延伸的返回极和返回极之间。 在第二实施例中，扩展的返回极被制成非常薄，从而增加其磁阻，而第三实施例在单一设计中组合磁阻增加特征。

公开(公告)号：US20060103979A1

公开(公告)日：2006-05-18

申请号：US10985890

申请日：2004-11-12

申请人： Yoshitaka Sasaki ,  Hironori Araki ,  Shigeki Tanemura ,  Hiroyuki Ito ,  Lijie Guan

发明人： Yoshitaka Sasaki ,  Hironori Araki ,  Shigeki Tanemura ,  Hiroyuki Ito ,  Lijie Guan

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A thin-film magnetic head structure has a configuration adapted to manufacture a thin-film magnetic head configured such that a main magnetic pole layer including a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side, and a thin-film coil wound about the write shield layer or main magnetic pole layer are laminated. The main magnetic pole layer has an end face joint structure where respective end faces of the magnetic pole end part and a yoke magnetic pole part having a size greater than that of the magnetic pole end part are joined to each other, and a surface with a flat structure on a side closer to the thin-film coil.

摘要翻译： 薄膜磁头结构具有适于制造薄膜磁头的结构，该薄膜磁头被构造成使得包括在与记录介质相对的介质相对表面侧的磁极端部的主磁极层，写入屏蔽 层，以在介质相对表面侧上形成记录间隙层，并且缠绕在写入屏蔽层或主磁极层上的薄膜线圈层叠。 主磁极层具有端面接合结构，其中磁极端部的各个端面和具有大于磁极端部的尺寸的轭铁磁极部彼此接合，并且具有 平面结构在更靠近薄膜线圈的一侧。

公开(公告)号：US20050280938A1

公开(公告)日：2005-12-22

申请号：US10898986

申请日：2004-07-27

申请人： Yoshitaka Sasaki ,  Lijie Guan ,  Hiroyuki Ito

发明人： Yoshitaka Sasaki ,  Lijie Guan ,  Hiroyuki Ito

IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/187 ,  G11B5/31

CPC分类号： G11B5/1872 ,  G11B5/1278 ,  G11B5/3103 ,  G11B5/3143 ,  G11B5/3163

摘要： A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on the side of the medium-opposing surface opposing a recording medium, a write shield layer opposite the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface, and a thin-film coil wound around at least a portion of the write shield layer. The main pole layer has the magnetic pole tip with a shortened structure which is not connected to the write shield layer, and an upper yoke pole section and/or lower yoke pole section with a larger size than the magnetic pole tip, and has a joined structure wherein the upper yoke pole section and/or lower yoke pole section is joined to the magnetic pole tip.

摘要翻译： 薄膜磁头具有层叠结构，该层叠结构包括：主磁极层，其在介质相对表面的与记录介质相对的一侧上具有磁极尖端;写入屏蔽层，与形成记录间隙层的磁极末端相对; 介质相对表面的侧面和缠绕在写入屏蔽层的至少一部分上的薄膜线圈。 主极层具有不与写入屏蔽层连接的具有缩短结构的磁极尖端，以及具有比磁极尖端大的尺寸的上轭铁极部分和/或下轭铁极部分，并且具有连接 结构，其中上磁轭极部分和/或下轭铁极部分接合到磁极尖端。

公开(公告)号：US20050219743A1

公开(公告)日：2005-10-06

申请号：US10818577

申请日：2004-04-06

申请人： Lijie Guan ,  Hung Hu ,  Yaw Tang

发明人： Lijie Guan ,  Hung Hu ,  Yaw Tang

IPC分类号： G11B5/31 ,  G11B5/127 ,  G11B5/147

CPC分类号： G11B5/1475 ,  G11B5/1278 ,  G11B5/315 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Prior art designs of single pole writers have been limited by premature saturation at the tip. This limits the head field that can be achieved without simultaneously widening the write profile. This problem has bee solved by means of a vertical main pole whose thickness has its conventional value a short distance from the tip but that tapers down to a significantly reduced value as it approaches the tip. A process for manufacturing this tapered tip design is also presented.

摘要翻译： 单极写入器的现有技术设计已经受到尖端处的过早饱和的限制。 这限制了可以实现的头部场，而不会同时加宽写入轮廓。 这个问题已经通过一个垂直的主极来解决，该垂直主极的厚度具有与尖端相距很短的常规值，但随着接近尖端而逐渐减小到显着降低的值。 还提出了一种用于制造该锥形尖端设计的工艺。