公开(公告)号：EP0051123A3

公开(公告)日：1982-11-17

申请号：EP81106696

申请日：1981-08-28

Applicant: International Business Machines Corporation

Inventor： Brock, George William ,  Hyland, Robert Norman ,  Pawlowski, Edward Joseph ,  Shelledy, Frank Boyd

IPC: G11B05/14 ,  G11B05/20 ,  G11B05/221 ,  G11B05/42

CPC classification number: G11B5/133 ,  G11B5/17

Abstract: A magnetic head assembly useful as a write head is formed with a ferrite substrate, having a recess (14) in one surface in which a conductive coil (18) is deposited, and a ferrite closure having a planar surface that is joined to the substrate surface to establish a transducing gap and to enclose the coil. In operation, pulsed write current is applied to the write head. A low resistivity ferrite substrate and closure are employed to provide a high saturation flux density.

公开(公告)号：EP0049755A3

公开(公告)日：1982-08-04

申请号：EP81106707

申请日：1981-08-28

Applicant: International Business Machines Corporation

Inventor： Radman, Anton Joseph, Jr. ,  Yudico, Richardo

IPC: G11B05/48 ,  G11B05/60 ,  G11B17/32 ,  G11B05/42

CPC classification number: G11B5/1871 ,  G11B5/4886 ,  G11B17/32

Abstract: A magnetic head assembly for use in transducing coaction with a flexible rotating magnetic disk, comprises a magnetic head (18) mounted on a pivoted support arm for arcuate movement across the disk. The head has a central transducing gap (32) on a centre rail (38) between symmetrical pairs of grooves (30A, 30B, 34A, 34B) and an offset groove (40) closest to the outboard face (36) of the head. The arrangement provides compensation for skew as the head is moved from the inner to the outer tracks on the disk.

Abstract translation: 一种用于与柔性旋转磁盘转换协作的磁头组件，包括安装在枢转支撑臂上的磁头（18），用于在磁盘上进行弧形移动。 头部在对称的一对槽（30A，30B，34A，34B）和最靠近头部的外侧面（36）的偏移槽（40）之间的中心轨道（38）上具有中央换能间隙（32）。 当磁头从磁盘上的内部磁道移动到外部磁道时，该配置提供对偏斜的补偿。

公开(公告)号：EP0031432A3

公开(公告)日：1981-12-30

申请号：EP80107036

申请日：1980-11-14

Applicant: International Business Machines Corporation

Inventor： Cox, Allen Ronald ,  Smathers, Edmond Watkinson

IPC: G11B05/48 ,  G11B05/60 ,  G11B05/42

CPC classification number: G11B5/4853 ,  G11B5/105 ,  G11B5/4833 ,  G11B5/6005

Abstract: A magnetic head mount assembly for accessing data tracks recorded on a magnetic medium includes a mounting post (10), an arm (16) which supports the post in close-fitting engagement, and a yoke (18) on which printed circuit connections are disposed. An end portion of the post is slotted (28a, 28b) to receive electrical leads (22) for connection to a ferrite magnetic transducer core (24) which forms part of an otherwise ceramic air bearing slider (26) positioned over the slotted end portion of the post. The arm element is preferably of hollow frusto-conical form.

公开(公告)号：EP0088869A3

公开(公告)日：1986-02-05

申请号：EP83100689

申请日：1983-01-26

Applicant: International Business Machines Corporation

Inventor： Anderson, Nathaniel Carl ,  Daby, Larry Eugene ,  Gravdahl, Vincent Dean ,  McCaffrey, Patrick Michael ,  Murray, Bruce Allen ,  Wright, Bruce Wayne

IPC: H01F41/14 ,  G11B05/42

CPC classification number: H01F41/34 ,  G03F7/00 ,  G11B5/193

Abstract: A process for producing a reactive ion-etched structure with height and width dimensions of the order of 25 microns or less on a ferrite substrate (12) surface is disclosed. A mask (18) of positive water saturated photoresist is formed on the substrate. A metal taken from the group consisting of nickel and a nickel-iron alloy is plated through the mask. The photoresist mask is removed to leave a pattern (20) in the plated metal. The ferrite substrate surface that is exposed by the pattern is reactive ion etched with a power density of more than 1w/cm 2 and a bias voltage less than -100 volts.

公开(公告)号：EP0105720A3

公开(公告)日：1985-11-27

申请号：EP83305851

申请日：1983-09-28

Applicant: AMPEX CORPORATION

Inventor： Latimer, Stanley M. ,  Orton, Gregory A.

IPC: G11B05/12 ,  G11B05/16 ,  G11B05/28 ,  G11B05/27 ,  G11B05/42

CPC classification number: G11B5/232 ,  G11B5/105 ,  G11B5/1272 ,  G11B5/1475 ,  G11B5/2651 ,  G11B5/295 ,  Y10T29/49055

Abstract: A magnetic transducer assembly having separate core portions (12, 13) with keyways (17,18) provided therein. The core portions are assembled to form a substantially closed magnetic circuit defining a transducing gap (35). The keyways form recesses which are contiguous with a transducer inner space provided by the assembled cores. The inner space and recesses are filled with a nonmagnetic bonding material. The resulting bond improves the mechanical coupling between the core portions.

公开(公告)号：EP0110513A3

公开(公告)日：1985-09-18

申请号：EP83305792

申请日：1983-09-26

Applicant: GARLIC TECHNOLOGY, INC.

Inventor： Moore, Peter Cecil

IPC: G11B05/27 ,  G11B05/42

CPC classification number: G11B5/2655 ,  G11B5/2657

Abstract: A magnetic multi-gap transducer having a single integrated core structure with a central common I-bar (22) and a pair of flanking pole pieces (21, 23). A first relatively low reluctance magnetic path is formed by the I-bar and a first one (21) of the flanking pole pieces to provide a recording gap (26) having a read function capability. A second relatively high reluctance magnetic path is formed by the central I-bar (22) and the other flanking pole piece (23) so as to define a second recording gap (27), the low reluctance for the second path being provided by a relatively large non-magnetic air gap between the I-bar and the second pole piece. The integrated core structure is embedded in a non-magnetic slider (10), and each flanking pole piece (21, 23) has an electromagnetic coil (31, 33) received thereon.

公开(公告)号：EP0032230A3

公开(公告)日：1982-01-13

申请号：EP80108128

申请日：1980-12-22

Applicant: Siemens Aktiengesellschaft

Inventor： Kayser, Wolfgang

IPC: G11B05/12 ,  G11B05/42

CPC classification number: G11B5/1871 ,  G11B5/31 ,  G11B5/3103 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3176

Abstract: There is disclosed an integrated magnetic transducer for recording and reproducing high frequency electrical signals on a magnetic recording medium and a method of manufacturing the transducer. A silicon substrate has a preferably V-shaped groove with two sides and two ends extending through the silicon substrate. Over the sides of the V-shaped groove a layer of magnetically inductive material is disposed which forms the pole pieces of the transducer. An electrically conductive layer covers this layer of magnetically inductive material and fills the space within the V-shaped groove. Another layer of magnetically inductive material is disposed over the electrically conductive layer. This second magnetically inductive layer completes the magnetic circuit. Means for contacting the electrically conductive layer at opposite ends of the V-shaped groove supply the electrically conductive layer with electrical current. The converging layers of said magnetically inductive material forming the pole pieces of the magnetic transducer are spaced apart at the apex of the V-shaped groove to form a transducer gap.

Abstract translation: 公开了一种用于在磁记录介质上记录和再现高频电信号的集成磁换能器及其制造方法。 硅衬底具有优选的V形槽，其两侧和两端延伸穿过硅衬底。 在V形槽的侧面上设置一层磁感应材料，其形成换能器的极片。 导电层覆盖该磁感应材料层并填充V形槽内的空间。 另外一层磁感应材料设置在导电层上。 该第二磁感应层完成磁路。 用于在V形槽的相对端处接触导电层的装置为导电层提供电流。 形成磁换能器的极片的所述磁感应材料的会聚层在V形槽的顶点处间隔开以形成换能器间隙。