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：US4752850A

公开(公告)日：1988-06-21

申请号：US719057

申请日：1985-04-02

Applicant: Masamichi Yamada ,  Masakatsu Saito ,  Takumi Sasaki ,  Katsuo Konishi

Inventor： Masamichi Yamada ,  Masakatsu Saito ,  Takumi Sasaki ,  Katsuo Konishi

IPC: G11B5/31 ,  G11B5/29 ,  G11B5/147 ,  G11B5/265

CPC classification number: G11B5/3103 ,  G11B5/31 ,  G11B5/3116

Abstract: Multi-track magnetic thin film heads for recording and reproducing an analog signal of an electronic still camera. The heads are constructed on a single non-magnetic substrate. Each of lower magnetic cores for the heads is separately formed in the surface of the non-magnetic substrate, in order to reduce cross talk from adjacent tracks. Further, in order to decrease a resistance of a coil thereof, a distance of back head gap parts of adjacent heads is formed larger than a distance of front head gap parts of the adjacent heads. As the non-magnetic substrate, a ceramic material comprising at least MnO and NiO are used, as a magnetic core material, an amorphous material including Co, Nb and Zr is used, and as a magnetic gap material, Cr or Zr is used.

Abstract translation: 用于记录和再现电子静态照相机的模拟信号的多轨磁性薄膜头。 头部构造在单个非磁性基板上。 用于头部的每个下磁芯分别形成在非磁性基板的表面中，以便减少相邻轨道的串扰。 此外，为了降低其线圈的电阻，相邻头部的后头间隙部分的距离形成为大于相邻头部的前头间隙部分的距离。 作为非磁性基板，使用至少包含MnO和NiO的陶瓷材料作为磁芯材料，使用包括Co，Nb和Zr的非晶材料，并且使用Cr或Zr作为磁隙材料。

公开(公告)号：US4742404A

公开(公告)日：1988-05-03

申请号：US796573

申请日：1985-10-28

Applicant: Yutaka Yunoki

Inventor： Yutaka Yunoki

IPC: G11B5/012 ,  G11B5/02 ,  G11B5/024 ,  G11B5/187 ,  G11B5/265 ,  G11B5/29 ,  G11B5/48 ,  G11B19/02 ,  G11B19/28 ,  G11B20/10 ,  G11B27/029 ,  H04N1/21 ,  H04N5/92 ,  G11B5/03

CPC classification number: H04N1/2129 ,  G11B19/02 ,  G11B19/28 ,  G11B20/10 ,  G11B27/029 ,  G11B5/012 ,  G11B5/02 ,  G11B5/024 ,  G11B5/187 ,  G11B5/2655 ,  G11B5/29 ,  G11B5/4826 ,  G11B5/4886 ,  H04N1/2112 ,  H04N5/92 ,  H04N2101/00 ,  Y10S358/906

Abstract: A magnetic recording/reproduction apparatus wherein a pulse corresponding to rotation of a magnetic disk is obtained by detecting a PG yoke signal as a rotational position detection index in the disk by a PG coil, and recording/reproduction control is performed by a control circuit or the like for erase recording/reproduction control in accordance with the pulse. Erase and recording/reproduction operations of data are performed with respect to the disk by a composite magnetic head controlled by the erase recording/reproduction control circuit. The composite magnetic head has an erase gap and a read/write gap integrally provided and separated from each other in the longitudinal direction of a recording track.

公开(公告)号：US4719527A

公开(公告)日：1988-01-12

申请号：US793007

申请日：1985-10-30

Applicant: Yorinobu Yoshisato ,  Hideki Yoshikawa ,  Kazuhiko Taketa ,  Isao Yasuda ,  Kenji Kubota ,  Kazuhiko Takahashi

Inventor： Yorinobu Yoshisato ,  Hideki Yoshikawa ,  Kazuhiko Taketa ,  Isao Yasuda ,  Kenji Kubota ,  Kazuhiko Takahashi

IPC: G11B5/115 ,  G11B5/29 ,  G11B5/17 ,  G11B5/31

CPC classification number: G11B5/29 ,  G11B5/115 ,  G11B5/17 ,  Y10T29/49055 ,  Y10T29/49066

Abstract: A magnetic head which comprises a pair of head chips each composed of a pair of plate-like magnetic cores superposed on and joined to each other with a spacer interposed therebetween and having a gap at the junction, a pair of base plates joined to the pair of head chips individually and positioned on opposite sides of and in parallel to a plane containing the gaps, each of the magnetic core having at one end thereof a head with a small width substantially equal to the width of tracks and an end portion of increased width opposite to the head, a shield member interposed between the head chips at the head portions, a stud portion provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil provided around the stud portion. A process is also disclosed for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps are accurately positioned on the same plane.

Abstract translation: 一种磁头，包括一对磁头芯片，每个磁头芯片由叠置在一起的一对板状磁芯组成，并且隔着间隔件插入并且在连接处具有间隙，一对连接到该对的基板 的头芯片分别定位在与包含间隙的平面的相对侧并且平行于其平面，每个磁芯的一端具有基本上等于轨道的宽度的小宽度的头部和具有增加的宽度的端部 位于头部相对的屏蔽部件之间，插入在头部的头部芯片之间的屏蔽部件，设置在一对磁芯中的至少一个并朝向另一个芯部突出的螺柱部分，以及设置在螺柱部分周围的线圈。 还公开了一种用于制造这种磁头的方法，其中一对磁芯彼此靠近定位，并且间隙被精确地定位在同一平面上。

公开(公告)号：US4703380A

公开(公告)日：1987-10-27

申请号：US696702

申请日：1985-01-31

Applicant: Tatsuo Imamura ,  Hiroyuki Yamamoto ,  Yutaka Yunoki

Inventor： Tatsuo Imamura ,  Hiroyuki Yamamoto ,  Yutaka Yunoki

IPC: G11B5/31 ,  G11B5/127 ,  G11B5/265 ,  G11B5/48 ,  G11B5/54 ,  G11B5/29

CPC classification number: G11B5/488 ,  G11B5/1278 ,  G11B5/54

Abstract: A perpendicular magnetic head includes a main pole suitable for use exclusively in recording information signals which is made of a soft magnetic film having the high saturation magnetization and another main pole suitable for use exclusively in reproducing recorded signals which is made of a soft magnetic film having the high initial permeability, both being disposed at separate positions.

Abstract translation: 垂直磁头包括专用于记录由具有高饱和磁化强度的软磁性膜制成的信息信号的主极，另一主极适用于专门用于再现由软磁膜制成的记录信号，该软磁膜具有 高初始磁导率均位于分开的位置。

公开(公告)号：US4695909A

公开(公告)日：1987-09-22

申请号：US669583

申请日：1984-11-08

Applicant: Kazuhiro Momata ,  Yoshinori Dekura ,  Tadashi Honzawa ,  Hiromi Matsushige

Inventor： Kazuhiro Momata ,  Yoshinori Dekura ,  Tadashi Honzawa ,  Hiromi Matsushige

IPC: G11B5/29 ,  G11B5/10 ,  G11B5/127 ,  G11B5/187 ,  G11B15/64

CPC classification number: G11B15/64 ,  G11B5/10

Abstract: A magnetic head for recording and reproducing information on and from a flexible magnetic recording tape. The active face of tape supporting protrusions formed in the magnetic head is so configured that the contacting area between the supporting protrusion and the recording tape is smaller at both end portions of the protrusion than an intermediate portion thereof as viewed in the direction widthwise of the recording tape, whereby improved contacting state and floating state between the magnetic head and the recording tape can be assured over the whole width of the flexible recording tape.

Abstract translation: 用于在柔性磁记录带上记录和再现信息的磁头。 形成在磁头中的带支撑突起的主动面被构造成使得突出部的两个端部处的支撑突起和记录带之间的接触面积比其记录方向的宽度方向上的中间部分小 磁带，从而可以在柔性记录带的整个宽度上确保磁头和记录带之间的改善的接触状态和浮动状态。

公开(公告)号：US4663836A

公开(公告)日：1987-05-12

申请号：US780713

申请日：1985-09-26

Applicant: Jan Bakker

Inventor： Jan Bakker

IPC: G11B5/105 ,  G11B5/10 ,  G11B5/115 ,  G11B5/147 ,  G11B5/29 ,  G11B5/42 ,  G11B5/11

CPC classification number: G11B5/29 ,  G11B5/10 ,  Y10T29/49041 ,  Y10T29/49055

Abstract: A method of manufacturing a multitrack magnetic head, including positioning and securing sets of core parts on major portions of base plates, arranging the base plates such that sets of core parts face each other, placing a screening plate between and transverse to the major portions, pressing the major portions against the screening plate, and then securing the major portions directly to the screening plate while maintaining the major portions under pressure.

Abstract translation: 一种制造多轨磁头的方法，包括在基板的主要部分上定位和固定一组芯部件，将基板布置成使一组芯部件彼此面对，将屏蔽板放置在主要部分之间并横向于主要部分， 将主要部分压靠在筛板上，然后将主要部分直接固定到筛板上，同时保持主要部分处于压力下。

公开(公告)号：US4607305A

公开(公告)日：1986-08-19

申请号：US464831

申请日：1983-02-08

Applicant: Richard K. Milo

Inventor： Richard K. Milo

IPC: G11B5/187 ,  G11B5/29 ,  G11B5/265

CPC classification number: G11B5/295 ,  G11B5/29 ,  Y10T29/49028 ,  Y10T29/49048 ,  Y10T29/49057

Abstract: A plurality of magnetic blocks is integrally joined side-by-side with a nonmagnetic material therebetween to provide a monolithic block defining parallel transducing gap planes, each pertaining to one multichannel transducer stack. A plurality of first parallel slots in the monolithic block intersects the gap planes to define a plurality of partitions, each partition forming pairs of magnetic pole pieces defining respective transducing gaps pertaining to respective stacks. The transducing gaps of each partition define interlaced transducing channels of the multichannel assembly. Second parallel slots provided along the gap planes have apexes defining transducing gap depths. The resulting transducing channels have uniform gap azimuth and gap depth while uniform internal stack alignment between all the respective stacks is obtained.

Abstract translation: 多个磁性块与它们之间的非磁性材料并排地并排成一体，以提供限定平行的换能间隙平面的整体块，每一个均属于一个多通道换能器叠层。 整体块中的多个第一平行槽与间隙平面相交以限定多个隔板，每个分隔件形成一对磁极片，其限定了与各个堆叠相关的各个换能间隙。 每个分隔板的换能间隙定义了多通道组件的隔行换能通道。 沿着间隙平面设置的第二平行槽具有限定换能间隙深度的顶点。 所得转换通道具有均匀的间隙方位角和间隙深度，同时获得所有各个叠层之间的均匀的内部堆叠对准。

公开(公告)号：US4594772A

公开(公告)日：1986-06-17

申请号：US100045

申请日：1979-12-04

Applicant: Anton M. Bucher

Inventor： Anton M. Bucher

IPC: G11B5/255 ,  G11B5/29 ,  G11B5/22

CPC classification number: G11B5/255 ,  G11B5/295 ,  Y10T29/49041 ,  Y10T29/49057 ,  Y10T29/49059 ,  Y10T29/49066

Abstract: The present disclosure relates to the manufacture of instrumentation magnetic transducers of the type including a pair of opposed support brackets having opposed magnetic pole pieces therein, the pole pieces in each bracket having edge faces all lying substantially in a common plane which is common with a first surface of each of the support brackets, and a pair of tip plates, each having slots in the bottom surfaces of the tip plates being adapted to be secured to respective first surfaces of the support brackets with the pole tips engaging the edge faces of the pole pieces and with a coupling gap between the pole tips to define signal channels for cooperation with a magnetic record medium. According to the present invention, the bottom surfaces of the tip plates are hard anodized prior to assembly thereof with the pole tips or the support brackets and the top surfaces of the tip plates are subsequently machined to a depth to expose the pole tips and to come close to the hard anodized area of the tip plates between the pole tips.

Abstract translation: 本公开涉及制造这种类型的仪表磁换能器，其包括一对相对的支撑支架，其中具有相对的磁极片，每个支架中的极片都具有基本上位于与第一 每个支撑托架的表面以及一对尖端板，每个顶板在尖端板的底表面中具有狭槽，其适于固定在支撑托架的相应第一表面上，其中极尖与杆的边缘面接合 并且在极尖之间具有耦合间隙以限定用于与磁记录介质协作的信号通道。 根据本发明，尖端板的底表面在与极尖或支撑支架组装之前进行硬质阳极氧化，并且后端板的顶表面随后被加工到一定深度以暴露极尖并来 靠近极尖之间的尖端板的硬质阳极氧化区域。

公开(公告)号：US4550492A

公开(公告)日：1985-11-05

申请号：US610906

申请日：1984-07-02

Applicant: James U. Lemke

Inventor： James U. Lemke

IPC: G11B5/17 ,  G11B5/29 ,  G11B5/31 ,  G11B5/49 ,  G11B5/12

CPC classification number: G11B5/29 ,  G11B5/17 ,  G11B5/31 ,  G11B5/3103 ,  G11B5/4907 ,  Y10T29/49041 ,  Y10T29/49048

Abstract: Batch practices of magnetic film deposition and circuit structuring are merged upon a common semiconductor substrate (chip) for both circuit and head parts. As to any one head being formed, the substrate is suitably doped and metallized to form electronics designed for cooperation with such head; then, thin films (cores) of magnetic material are deposited on the semiconductor substrate for cooperation with the electronics. After the thin film head cores are appropriately gapped, a (common) yoke is brought into contact with them . . . the substrate being thereafter contoured through its underside to expose the thin film core gaps.

Abstract translation: 磁性膜沉积和电路结构的分批实践合并在用于电路和头部的公共半导体衬底（芯片）上。 对于正在形成的任何一个头部，衬底被适当地掺杂和金属化以形成设计用于与这种头部配合的电子器件; 那么磁性材料的薄膜（芯）就沉积在半导体衬底上以与电子器件配合。 在薄膜磁芯芯适当地间隙之后，（共用）磁轭与它们接触。 。 。 该衬底此后通过其下侧成形以露出薄膜芯间隙。