公开(公告)号：US4758917A

公开(公告)日：1988-07-19

申请号：US851592

申请日：1986-04-11

Applicant: Beverley R. Gooch

Inventor： Beverley R. Gooch

IPC: G11B5/29 ,  G11B5/115 ,  G11B5/265 ,  G11B5/53

CPC classification number: G11B5/2657 ,  G11B5/115 ,  G11B5/534

Abstract: A magnetic shield is provided for stray flux reduction from a transducer into a laterally disposed adjacent transducer. The shield substantially covers the transducing winding and extends in close proximity over a rear portion of the magnetic core. The shield does not extend over the transducing gap, to prevent magnetic coupling therewith. In the preferred embodiment a staggered two channel video type transducer has shields on opposite sides thereof in direct contact with the cores. The shields have recesses to accommodate the windings.

Abstract translation: 提供磁屏蔽用于从换能器到横向设置的相邻换能器的杂散磁通量减少。 屏蔽件基本上覆盖转换绕组并且在磁芯的后部附近延伸。 屏蔽层不延伸超过换能间隙，以防止与其的磁耦合。 在优选实施例中，交错的双通道视频类型换能器在其与芯的直接接触的相对侧上具有屏蔽。 屏蔽件具有凹部以容纳绕组。

公开(公告)号：US4644432A

公开(公告)日：1987-02-17

申请号：US695647

申请日：1985-01-28

Applicant: David E. Heim

Inventor： David E. Heim

IPC: G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/265 ,  G11B5/31 ,  G11B15/12 ,  G11B5/147

CPC classification number: G11B15/12 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/2657 ,  G11B5/31

Abstract: A magnetic head has three pole pieces that form a magnetic circuit. The magnetic pole pieces are arranged in a common plane so that the two outside pole pieces are each spaced from the central pole piece to form a transducing gap between each of the outside pole pieces and the central pole piece. A first and a second coil, each having the same magnetic sense, is wound on the magnetic structure between an outside and the center pole piece. The coils are connected in series for a write operation so that the flux in the outside pole pieces is additive for writing, and the coils are connected in series opposition for a read operation so that the flux produced in the center pole by a previously recorded magnetic transition in the magnetic recording medium adjacent to the transducing gaps is sensed additively in the coils.

Abstract translation: 磁头具有形成磁路的三个极片。 磁极片布置在公共平面中，使得两个外部极片与中心极片分开，以在每个外部极片和中心极片之间形成换能间隙。 每个具有相同磁感的第一和第二线圈缠绕在外部和中心极片之间的磁性结构上。 线圈串联连接用于写入操作，使得外部极片中的磁通量是相加的用于写入，并且线圈串联连接用于读取操作，使得在中心极处产生的磁通由先前记录的磁 在线圈中相加地感测与传感间隙相邻的磁记录介质中的过渡。

公开(公告)号：US08542464B2

公开(公告)日：2013-09-24

申请号：US13367353

申请日：2012-02-06

Applicant: Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

Inventor： Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

IPC: G11B5/23 ,  G11B5/127

CPC classification number: G11B5/2657 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture.

Abstract translation: 随着轨道密度的增加，在写入给定的轨道时，不会无意中在相邻轨道中写入数据变得越来越重要。 通过将ABS平面中的材料的宽度限制在写入间隙内，已经克服了这个问题。 比这个更宽的下极的部分从ABS背面向后凹陷，从而大大降低其对相邻轨道的磁影响。 描述了包含这一概念的写入头的四个不同实施例以及对其制造的一般过程的描述。

公开(公告)号：US20120134052A1

公开(公告)日：2012-05-31

申请号：US13367354

申请日：2012-02-06

Applicant: Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

Inventor： Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

IPC: G11B5/17

CPC classification number: G11B5/2657 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture.

公开(公告)号：US20120134051A1

公开(公告)日：2012-05-31

申请号：US13367353

申请日：2012-02-06

Applicant: Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

Inventor： Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

IPC: G11B5/17

CPC classification number: G11B5/2657 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture.

公开(公告)号：US07554763B2

公开(公告)日：2009-06-30

申请号：US10984650

申请日：2004-11-09

Applicant: Kiyoshi Sato

Inventor： Kiyoshi Sato

IPC: G11B5/17

CPC classification number: G11B5/2657

Abstract: A magnetic head includes a plurality of coil elements disposed in a space defined by a lower core layer, a pole layer, and a back gap layer. A coil insulator fills the space so as to cover the coil elements. The top face of the pole layer, the top face of the coil insulator, the top faces of the coil elements, and the top face of the back gap layer form a planarized plane. The coil elements are disposed on a recess formed on the lower core layer. The bottom faces of the coil elements are disposed at substantially the same height as the top face of the lower core layer. The top faces of the coil elements lie in the planarized plane.

Abstract translation: 磁头包括设置在由下芯层，极层和后间隙层限定的空间中的多个线圈元件。 线圈绝缘体填充空间以覆盖线圈元件。 极层的顶面，线圈绝缘子的顶面，线圈元件的顶面和后间隙层的顶面形成平面化平面。 线圈元件设置在形成在下芯层上的凹部上。 线圈元件的底面设置在与下芯层的顶面基本相同的高度。 线圈元件的顶面位于平面平面内。

公开(公告)号：US08767349B2

公开(公告)日：2014-07-01

申请号：US13367349

申请日：2012-02-06

Applicant: Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

Inventor： Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

IPC: G11B5/127

CPC classification number: G11B5/2657 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture.

公开(公告)号：US20120137507A1

公开(公告)日：2012-06-07

申请号：US13367355

申请日：2012-02-06

Applicant: Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

Inventor： Moris Dovek ,  Glen Garfunkel ,  Po Kang Wang

IPC: G11B5/127

CPC classification number: G11B5/2657 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture.

公开(公告)号：US20050099727A1

公开(公告)日：2005-05-12

申请号：US10706381

申请日：2003-11-12

Applicant: Moris Dovek ,  Glen Garfunkel ,  Po Wang

Inventor： Moris Dovek ,  Glen Garfunkel ,  Po Wang

IPC: G11B5/147 ,  G11B5/265

CPC classification number: G11B5/2657 ,  Y10T29/49021 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture.

Abstract translation: 随着轨道密度的增加，在写入给定的轨道时，不会无意中在相邻轨道中写入数据变得越来越重要。 通过将ABS平面中的材料的宽度限制在写入间隙内，已经克服了这个问题。 比这个更宽的下极的部分从ABS背面向后凹陷，从而大大降低其对相邻轨道的磁影响。 描述了包含这一概念的写入头的四个不同实施例以及对其制造的一般过程的描述。

公开(公告)号：US06396659B1

公开(公告)日：2002-05-28

申请号：US08785802

申请日：1997-01-21

Applicant: Makoto Nakayama

Inventor： Makoto Nakayama

IPC: G11B5265

CPC classification number: G11B5/2651 ,  G11B5/016 ,  G11B5/2657

Abstract: In a magnetic head assembly for a flexible disk drive, a write/read head and an erase head are formed with grooves defining track widths only in I-shaped cores thereof. Erase track widths are dimensioned 53 &mgr;m to 63 &mgr;m each while a track width is dimensioned 125 &mgr;m to 135 &mgr;m. These dimensions correct the extension of magnetic fluxes from gaps. Hence, the assembly does not lower the reproduction output or erase the data of adjoining tracks, thereby insuring compatibility of magnetic recording media or disks.

Abstract translation: 在用于软盘驱动器的磁头组件中，写入/读取头和擦除头形成有仅在其I形芯中限定轨道宽度的槽。 擦除轨道宽度的尺寸为53mum至63mum，而轨道宽度的尺寸为125mum至135mum。 这些尺寸校正了来自间隙的磁通量的扩展。 因此，组件不会降低再现输出或擦除相邻轨道的数据，从而确保磁记录介质或磁盘的兼容性。