公开(公告)号：US11087782B1

公开(公告)日：2021-08-10

申请号：US16903253

申请日：2020-06-16

申请人： Western Digital Technologies, Inc.

发明人： Diane L. Brown ,  Edward Hin Pong Lee

IPC分类号： G11B5/115 ,  G11B5/265 ,  G11B5/245 ,  G11B5/008 ,  G11B5/31 ,  G11B5/39 ,  G11B5/29

摘要： Embodiments of the present disclosure generally relate to tape drives used for magnetic recording on tapes. Tape drives use tape heads that comprise a read head, a write head, and an additional head that may be a write head or a read head. The tape head is fabricated over a common substrate with the first head being formed first, followed by a shield layer, followed by the second head, followed by another shield layer, and finally followed by the third head. Fabricating the tape head over a common substrate is cost effective. The tape head can be wired such that fewer parallel connections between the heads and bond pads are present. As such, cross-talk between the wires and noise is reduced.

公开(公告)号：US07436633B2

公开(公告)日：2008-10-14

申请号：US11205072

申请日：2005-08-17

申请人： Hiroshi Kiyono ,  Tetsuya Kuwashima ,  Takeo Kagami ,  Noriaki Kasahara ,  Naoki Ohta ,  Nozomu Hachisuka

发明人： Hiroshi Kiyono ,  Tetsuya Kuwashima ,  Takeo Kagami ,  Noriaki Kasahara ,  Naoki Ohta ,  Nozomu Hachisuka

IPC分类号： G11B5/245

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/1278 ,  G11B5/31 ,  G11B5/3912 ,  G11B5/3967 ,  G11B5/4826 ,  G11B2005/3996

摘要： A parasitic capacity C4 generated between a slider substrate and the first shield layer with the first insulating layer as a capacity layer is made substantially equal to a parasitic capacity C2 occurring between a lower magnetic layer and the second shield layer with the third insulating layer as a capacity layer. Preferably, a connection is made between the lower magnetic layer and the slider substrate by a resistance of preferably 100 (Ω) or lower. Thus, it is possible to provide a thin-film magnetic head that can hold back deterioration in a reproducing device and the occurrence of errors due to crosstalk between a recording device and the reproducing device and extraneous noises.

摘要翻译： 在第一绝缘层作为电容层的滑块基板与第一屏蔽层之间产生的寄生电容C 4大体上等于具有第三绝缘层的下磁层与第二屏蔽层之间的寄生电容C 2 作为容量层。 优选地，通过优选100（Ω）或更低的电阻在下磁性层和滑块基板之间形成连接。 因此，可以提供能够抑制再现装置中的劣化的薄膜磁头和由于记录装置与再现装置之间的串扰而引起的错误的发生以及无关的噪声。

公开(公告)号：US5888411A

公开(公告)日：1999-03-30

申请号：US748437

申请日：1996-11-13

申请人： Uri Cohen

发明人： Uri Cohen

IPC分类号： G11B5/245 ,  G11B5/31 ,  G11B5/39 ,  H01F41/34 ,  B44C1/22

CPC分类号： G11B5/3967 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3176 ,  H01F41/34 ,  G11B5/245 ,  G11B5/3903 ,  Y10T29/49044 ,  Y10T29/49046

摘要： An inductive pinched-gap thin film head (TFH) device having pole-tips which are in substantial contact along their side-edges, thereby precisely defining a pinched-gap segment. The substantial contact between the pole-tips' side-edges effectively eliminates all flux lines emanating from the edges and corners during the write operation. The write magnetic field is thus precisely confined to across the pinched-gap segment. As a result, the written medium track width is accurately defined by the width of the pinched-gap segment with high degree of magnetization coherency and virtual elimination of the track-edge noise. The improved (medium) signal-to-noise ratio facilitates substantial increase of the track density. Photolithographic definition and etching of the gap-vias to the bottom pole-tip, followed by deposition of the top pole-tip, facilitates precise and consistent control of the width of the pinched-gap segment (and the written track) drawn to .ltoreq.1 .mu.m.

摘要翻译： 具有极尖的感应夹持薄膜头（TFH）装置，它们沿其侧边缘基本接触，从而精确地限定夹持间隙段。 极尖侧边缘之间的实质接触有效地消除了在写入操作期间从边缘和拐角发出的所有磁通线。 因此，写磁场精确地限制在夹持间隙段之间。 结果，写入的介质轨道宽度由具有高度的磁化相关性和虚拟消除轨道边缘噪声的夹紧间隙段的宽度精确地限定。 改进的（中）信噪比有助于磁道密度的显着增加。 对底极尖端的间隙通孔的光刻定义和蚀刻，随后沉积顶极尖端，有助于精确和一致地控制被拉伸到的夹持间隙段（和写入轨迹） = 1亩。

公开(公告)号：US5729413A

公开(公告)日：1998-03-17

申请号：US575563

申请日：1995-12-20

申请人： Beverley R. Gooch ,  George Varian

发明人： Beverley R. Gooch ,  George Varian

IPC分类号： G11B5/00 ,  G11B5/23 ,  G11B5/245 ,  G11B5/265 ,  G11B5/31

CPC分类号： G11B5/245 ,  G11B5/2452 ,  G11B5/265 ,  G11B5/3103 ,  G11B5/313 ,  G11B5/3146 ,  G11B2005/0034

摘要： An improved magnetic head obviates the need for separate read and write heads in a magnetic storage system by providing a head core having two physical gaps configured to generate a reproduce track width that is narrower than a record track width. The core of the head comprises a tapered center pole disposed between two generally symmetrical main poles to form physical record and reproduce gaps. A magnetically saturable, high permeability element is disposed within the core in a manner that bridges the rear of the record gap.

摘要翻译： 改进的磁头通过提供具有被配置为产生比记录磁道宽度窄的再现磁道宽度的两个物理间隙的磁头磁芯，从而避免了在磁存储系统中对单独的读取和写入磁头的需要。 头部的芯部包括设置在两个大致对称的主极之间的锥形中心极，以形成物理记录和再现间隙。 磁性可饱和的高磁导率元件以桥接记录间隙的后部的方式设置在芯内。

公开(公告)号：US5414783A

公开(公告)日：1995-05-09

申请号：US125722

申请日：1993-09-24

申请人： Raphael F. Bov, Jr. ,  Jose R. Diaz

发明人： Raphael F. Bov, Jr. ,  Jose R. Diaz

IPC分类号： G06K7/08 ,  G11B5/245 ,  G11B5/23 ,  H01F3/00

CPC分类号： G06K7/084 ,  G11B5/245

摘要： A write head magnetizes magnetic-ink characters for a MICR system. A magnetic assembly defines a first pole in a first location and an opposite pole in a second location. A first pole piece and a second pole piece, spaced by a gap therebetween, are provided, the first pole piece disposed adjacent the first location and adapted to conduct a magnetic field from the first pole to the gap. A selectably positionable member is disposed between the second location and the second pole piece, the positionable member being adapted to affect a magnetic field from the second location through the second pole piece to the gap, thereby facilitating selectable alteration of a magnetic field profile across the gap.

摘要翻译： 写磁头磁化MICR系统的墨水字符。 磁性组件在第一位置中限定第一极点，在第二位置限定相对的极点。 第一极片和第二极片之间设有间隙，第一极片与第一位置相邻设置，并且适于将磁场从第一极传导到间隙。 可选择地定位的构件设置在第二位置和第二极靴之间，可定位构件适于影响从第二位置通过第二极靴到间隙的磁场，从而有助于可选择地改变横跨 间隙。

公开(公告)号：US5189572A

公开(公告)日：1993-02-23

申请号：US843453

申请日：1986-03-24

申请人： Beverley R. Gooch

发明人： Beverley R. Gooch

IPC分类号： G01R33/00 ,  G11B20060101 ,  G11B5/00 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/245 ,  G11B5/49 ,  G11B5/53 ,  G11B5/588 ,  G11B15/18

CPC分类号： G11B5/245 ,  G01R33/00 ,  G11B15/1875 ,  G11B5/00 ,  G11B5/127 ,  G11B5/187 ,  G11B5/2452 ,  G11B5/4907 ,  G11B5/4969 ,  G11B5/53 ,  G11B5/588

摘要： A magnetic transducer has a transducing gap that is wider than that used for transferring information signals with respect to a magnetic record medium. A magnetic control flux is applied to the transducer to enable a selected segment of the transducing gap, which defines a transducing zone, for transferring information signals with respect to a selected path along the magnetic record medium. Registration of the transducing zone over the selected path is maintained by varying the applied magnetic control flux to thereby move the transducing zone along the wider transducing gap so as to compensate for deviations between the path traced by the transducing zone over the magnetic record medium and the selected path.

摘要翻译： 磁换能器具有比用于传送关于磁记录介质的信息信号所用的换能间隙。 将磁控制通量施加到换能器以使能限定换能区的换能间隙的选定段相对于沿磁记录介质的选定路径传送信息信号。 通过改变所施加的磁力控制通量来维持所选择的路径上的换能区域的登记，从而沿着较宽的换能间隙移动换能区域，以便补偿由磁记录介质上的换能区域跟踪的路径与 选择路径

公开(公告)号：US5173821A

公开(公告)日：1992-12-22

申请号：US670643

申请日：1991-03-18

申请人： William T. Maloney

发明人： William T. Maloney

IPC分类号： G11B5/245

CPC分类号： G11B5/2455 ,  G11B5/2452

摘要： A ring-type magnetic recording and reading head having a saturable pole tip that defines a narrow gap for reading and saturates in response to normal write current so as to define a wide gap for recording.

摘要翻译： 一种具有可饱和磁极尖端的环形磁记录读取头，其限定用于响应于正常写入电流读取和饱和的窄间隙，以便限定用于记录的宽间隙。

公开(公告)号：US5097372A

公开(公告)日：1992-03-17

申请号：US559067

申请日：1990-07-30

申请人： Toshio Fukazawa ,  Yuji Nagata

发明人： Toshio Fukazawa ,  Yuji Nagata

IPC分类号： G11B5/245 ,  G11B5/31 ,  G11B5/39 ,  G11B5/127

CPC分类号： G11B5/3925 ,  G11B5/2452 ,  G11B5/3116 ,  G11B5/3945 ,  G11B5/3967

摘要： A thin film magnetic head includes an upper magnetic layer comprising a first yoke, a portion of which is divided into front and rear sections and which is provided near the divided sections with a magneto-resistive element, a second yoke provided adjacent to the opposite ends of the first yoke in a widthwise direction of a recording track and a third yoke provided between the first yoke and the second yoke and having a larger magnetic reluctance than those of the first and second yokes. In the above constitution, the first, second and third yokes can be mainly used in recording to record in an area of a large width on the recording medium, and only the first yoke can be used in reproducing to reproduce in an area of a small width on the recording medium, so that the reproducing output is not reduced when the recording medium experiences a running deviation.

公开(公告)号：US5014149A

公开(公告)日：1991-05-07

申请号：US398359

申请日：1989-08-25

申请人： Atsushi Ibaraki

发明人： Atsushi Ibaraki

IPC分类号： G11B5/245 ,  G11B5/31

CPC分类号： G11B5/313 ,  G11B5/2452

摘要： A thin film magnetic head used for a magnetic disk device. The thin film magnetic head comprises two magnetic layers, a magnetic insulating layer sandwiched between the magnetic layers, an intermediate magnetic layer which is thinner than the magnetic layers, and an intermediate magnetic insulating layer formed in the vicinity of a gap surface between the intermediate magnetic layer and one of the magnetic layers. A track width in the gap surface of the intermediate magnetic layer is narrower than a track width in the gap surface of the two magnetic layers.

摘要翻译： 用于磁盘装置的薄膜磁头。 薄膜磁头包括两个磁性层，夹在磁性层之间的磁性绝缘层，比磁性层薄的中间磁性层，以及形成在中间磁性层之间的间隙表面附近的中间磁性绝缘层 层和磁层之一。 中间磁性层的间隙表面中的轨道宽度比两个磁性层的间隙表面中的轨道宽度窄。

公开(公告)号：US4849841A

公开(公告)日：1989-07-18

申请号：US36915

申请日：1987-04-10

申请人： Edmund L. Sokolik

发明人： Edmund L. Sokolik

IPC分类号： G11B5/245

CPC分类号： G11B5/2452

摘要： A magnetic core structure for a transducer head of the type used in digital data storage devices is wider on one side of the magnetic gap (e.g., the write side) than it on the other side of the gap (e.g., the read side), to provide "wide write-arrow read" recording and reproducing capabilities. Magnetic flux return during recording (writing) operations is accomplished through the comparatively narrow read core plus additional magnetic closure elements which are disposed alongside, and which magnetically shunt, the read core, such that the overall core structure has basically the same width on each side of the magnetic gap. Improved transducing performance is provided by using additional thickness for such magnetic shunts and recessing the end extremity of the latter adjacent the gap at the face of the head, where the head accesses the magnetic recording media, such that the overall magnetic reluctance of the magnetic returns (i.e., shunts) is lowered but the effective gap width of the head is not changed.

摘要翻译： 用于数字数据存储设备中类型的换能器头的磁芯结构在磁隙（例如，写入侧）的一侧比在间隙的另一侧（例如，读侧）更宽， 提供“宽写箭头读”记录和再现功能。 在记录（写入）操作期间的磁通返回通过​​比较窄的读取磁芯和附加的磁性闭合元件来实现，这些附加的磁性闭合元件被旁边设置并且磁性地分流读取的磁芯，使得整个磁芯结构在每一侧具有基本上相同的宽度 的磁隙。 通过使用这种磁分流器的附加厚度来提供改进的传导性能，并且使头部接近磁记录介质的头部接近磁头的间隙附近的端部的末端凹陷，使得磁返回的总磁阻 （即分流器）下降，但头部的有效间隙宽度不变。