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21. 发明申请

US20080180865A1 CPP magnetic recording head with self-stabilizing vortex configuration 有权
标题翻译： CPP磁记录头具有自稳定涡流配置
公开(公告)号：US20080180865A1
公开(公告)日：2008-07-31
申请号：US12079470
申请日：2008-03-27
申请人： Tai Min , Pokang Wang , Min Li , Otto Vogeli
发明人： Tai Min , Pokang Wang , Min Li , Otto Vogeli
IPC分类号： G11B5/33
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3912 , G11B2005/3996 , G11C11/16 , Y10T29/49043 , Y10T29/49048 , Y10T29/49053
摘要： A CPP MTJ or GMR read sensor is provided in which the free layer is self-stabilized by a magnetization in a circumferential vortex configuration. This magnetization permits the pinned layer to be magnetized in a direction parallel to the ABS plane, which thereby makes the pinned layer directionally more stable as well. The lack of lateral horizontal bias layers or in-stack biasing allows the formation of closely configured shields, thereby providing protection against side-reading. The vortex magnetization is accomplished by first magnetizing the free layer in a uniform vertical field, then applying a vertical current while the field is still present.
摘要翻译：提供了CPP MTJ或GMR读取传感器，其中自由层通过周向涡流构型中的磁化而自稳定。这种磁化允许钉扎层在平行于ABS平面的方向上被磁化，从而使钉扎层也更方向地更稳定。缺少横向水平偏置层或叠层偏压允许形成紧密配置的屏蔽，从而提供防止侧读的保护。涡流磁化是通过在均匀的垂直场中首先磁化自由层，然后在场仍然存在时施加垂直电流来实现的。

22. 发明申请

US20040154159A1 Thin-film magnetic head and method of manufacturing same 失效
公开(公告)号：US20040154159A1
公开(公告)日：2004-08-12
申请号：US10790049
申请日：2004-03-02
申请人： TDK Corporation
发明人： Yoshitaka Sasaki , Tohru Inoue
IPC分类号： G11B005/187
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3109 , G11B5/313 , G11B5/3163 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B2005/3996 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49039 , Y10T29/49043 , Y10T29/49044 , Y10T29/49053 , Y10T29/4906 , Y10T29/49062 , Y10T29/49064
摘要： A thin-film magnetic head comprises a reproducing head and a recording head. The reproducing head comprises: a GMR element; a bottom shield layer and a top shield layer for shielding the GMR element; conductive layers connected to the GMR element; and shield gap films formed between the shield layers. Each of the shield gap films is made up of a plurality of thin alumina films stacked that are formed by performing the step of forming a thin alumina film by low pressure CVD, for example, a plurality of times.

23. 发明授权

US06646829B2 Slider materials 有权
公开(公告)号：US06646829B2
公开(公告)日：2003-11-11
申请号：US10294883
申请日：2002-11-15
申请人： Yoshitaka Sasaki , Akinori Koyama , Hiroyuki Itoh
发明人： Yoshitaka Sasaki , Akinori Koyama , Hiroyuki Itoh
IPC分类号： G11B5147
CPC分类号： G11B5/3106 , G11B5/102 , Y10T29/49053
摘要： An object of the invention is to facilitate processing and to obtain sliders as many as possible when the sliders for thin-film magnetic heads are manufactured through the use of a circular-plate-shaped wafer in which a plurality of rows of sections to be the sliders are aligned. The circular-plate-shaped wafer includes the rows of the sections to be the sliders aligned in one orientation. Each of the sections to be the sliders includes a thin-film magnetic head element. Three types of slider materials having different widths are cut out from the wafer. Each of the three types of slider materials includes rows of the sections to be the sliders. Processing including lapping is performed on a surface to be medium facing surfaces of each of the three types of slider materials. The materials are then separated to form slider aggregates each of which includes one of the rows of the sections to be the sliders. Rails are formed in a surface to be the medium facing surfaces of the slider aggregates. The slider aggregates are then separated.

24. 发明授权

US5423116A Method of manufacturing a multi-track longitudinal, metal-in-gap head 失效
标题翻译：制造多轨纵向金属间隙头的方法
公开(公告)号：US5423116A
公开(公告)日：1995-06-13
申请号：US94689
申请日：1993-07-21
申请人： Ramesh Sundaram
发明人： Ramesh Sundaram
IPC分类号： G11B5/187 , G11B5/29 , G11B5/39 , G11B5/48
CPC分类号： G11B5/39 , G11B5/1878 , G11B5/295 , G11B5/4893 , Y10T29/49037 , Y10T29/49048 , Y10T29/49053
摘要： A multi-track longitudinal magnetic tape head capable of writing data to high-coercivity magnetic tapes and a method for making the same. The multi-track, longitudinal magnetic tape head according to the present invention comprises a plurality of write elements and read elements. The write elements comprise a write pole separated from a substrate by a write gap. The write poles each comprise a block of magnetic material having a planar gap surface and a convex top surface. A high B.sub.s composition is deposited on an etched portion of the magnetic material of each write pole at the gap surface. The gap surface is processed so that it is a contiguous planar surface comprising the high B.sub.s, composition, insulating material and the magnetic material.
摘要翻译：一种能够将数据写入高矫顽力磁带的多轨纵向磁带头及其制造方法。根据本发明的多轨纵向磁带头包括多个写入元件和读取元件。写入元件包括通过写入间隙与衬底分离的写入极。写磁极各自包括具有平面间隙表面和凸顶表面的磁性材料块。在间隙表面上，每个写极的磁性材料的蚀刻部分上沉积高Bs组成。处理间隙表面，使其为包括高Bs，组成，绝缘材料和磁性材料的邻接平面。

25. 发明授权

US4843486A Multi-element magnetic head and method of fabricating the same 失效
标题翻译：多元件磁头及其制造方法
公开(公告)号：US4843486A
公开(公告)日：1989-06-27
申请号：US33733
申请日：1987-04-03
申请人： Toshikane Yoshimatsu , Yoshiki Hagiwara , Yoshikazu Tsuji , Kazuhiro Momata
发明人： Toshikane Yoshimatsu , Yoshiki Hagiwara , Yoshikazu Tsuji , Kazuhiro Momata
IPC分类号： G11B5/127 , G11B5/133 , G11B5/17 , G11B5/29
CPC分类号： G11B5/17 , G11B5/295 , Y10T29/49048 , Y10T29/49053 , Y10T29/49055
摘要： A method of fabricating a multi-element magnetic head core is provided in which a plurality of first grooves are formed in a surface of a magnetic block to form a plurality of magnetic circuits, a plurality of second grooves are formed in this surface in directions perpendicular to the first grooves to separate the magnetic circuits from each other, the first and second grooves are filled with a non-magnetic material, the magnetic block is then cut along lines parallel to the second grooves to obtain a plurality of core blocks, and a third groove is formed in each core block from a side wall thereof to isolate the magnetic circuits completely from each other. According to this method, the number of fabrication steps required for forming a multi-element magnetic head core can be reduced, and moreover a multiplicity of magnetic head cores can be formed at the same time.
摘要翻译：提供了一种制造多元件磁头芯的方法，其中在磁块的表面中形成多个第一凹槽以形成多个磁路，在该表面上沿垂直于垂直方向的方向形成多个第二凹槽到第一沟槽以将磁路彼此分离，第一和第二沟槽被非磁性材料填充，然后沿着平行于第二槽的线切割磁性块，以获得多个芯块，并且在每个芯块中从其侧壁形成第三槽，以将磁路彼此完全隔离。根据该方法，可以减少形成多元件磁头磁芯所需的制造步骤的数量，此外可以同时形成多个磁头磁芯。

26. 发明授权

US4372036A Method of manufacturing a single-track video ferrite record/reproduce head 失效
标题翻译：制造单轨视频铁氧体记录/再现头的方法
公开(公告)号：US4372036A
公开(公告)日：1983-02-08
申请号：US944685
申请日：1978-09-22
申请人： John F. Bagby
发明人： John F. Bagby
IPC分类号： G11B5/187 , G11B5/193 , G11B5/255 , G11B5/42
CPC分类号： G11B5/255 , G11B5/187 , G11B5/193 , Y10T29/49041 , Y10T29/49048 , Y10T29/49053 , Y10T29/49057
摘要： Two magnetic ferrite pieces having longitudinal channels formed in the side faces thereof are bonded together with a gapping substance so that the resultant channels form a window. The bonded pieces are precisely slotted to a depth below the apex of the window to form a narrow track-defining comb-like array. The resulting slots are adapted to receive gap-protecting compatible ceramic support material which is so chosen as to wear slightly faster than the ferrite surfaces. In one embodiment, the slots contain ceramic-convertible glass which is devitrified by firing the array. The assembly is then processed to form a ceramic-ferrite-ceramic or ceramic-ferrite transducer sandwich which may be further processed to form part of a magnetic record and/or reproduce head.
摘要翻译：具有形成在其侧面中的纵向通道的两个磁性铁氧体片用间隙物质结合在一起，使得所得通道形成窗口。粘合片精确地开槽到窗口顶点下方的深度，以形成窄轨道限定梳状阵列。所得到的槽适于接收间隙保护兼容的陶瓷支撑材料，其被选择为比铁氧体表面稍快地磨损。在一个实施例中，槽包含通过烧制阵列而失透的陶瓷可转换玻璃。然后将组件加工成陶瓷 - 铁氧体陶瓷或陶瓷 - 铁氧体转换器三明治，其可进一步处理以形成磁记录和/或再现磁头的一部分。

27. 发明授权

US3999286A Method of making multitrack heads 失效
标题翻译：制作多轨头的方法
公开(公告)号：US3999286A
公开(公告)日：1976-12-28
申请号：US586055
申请日：1975-06-11
申请人： Harvey J. Richardson , Robert J. Youngquist
发明人： Harvey J. Richardson , Robert J. Youngquist
IPC分类号： G11B5/29 , G11B5/42
CPC分类号： G11B5/29 , Y10T29/49048 , Y10T29/49053 , Y10T29/49057 , Y10T29/49066
摘要： A multitrack recording head having a pair of ferrite combs whose teeth are separated at their tips by nonmagnetic gap spacers and whose bases are in abutting relationship. Each tooth of one comb has a wire coil for electrically transmitting signals to or from each track of the head.
摘要翻译：一种具有一对铁氧体梳子的多轨记录头，其齿在其尖端处由非磁性间隙隔离并且其基部处于邻接关系。一个梳子的每个齿具有用于将信号电传送到头部的每个轨道或从头部的每个轨道传输信号的线圈。

28. 发明授权

US3851375A Method of bonding together mouldings of sintered oxidic ferromagnetic material 失效
标题翻译：烧结氧化铁素体材料的焊接方法
公开(公告)号：US3851375A
公开(公告)日：1974-12-03
申请号：US44157574
申请日：1974-02-11
申请人： PHILIPS CORP
发明人： KOORNEEF J
IPC分类号： G11B5/29 , B23K31/02
CPC分类号： G11B5/29 , Y10T29/49041 , Y10T29/49048 , Y10T29/49053 , Y10T29/49055
摘要： In manufacturing in particular multi-channel magnetic heads, it is usual to place two ferrite blocks on each other with the interposition of spacing members, to cause glass to flow into the resulting space during a first bonding step, to make grooves in the resulting assembly, and to cement therein filling members with glass during a second bonding step. This method has several drawbacks which are avoided by producing a connection between the ferrite blocks and the spacing members prior to performing further operations, which connection fixes the ferrite blocks relative to each other.
摘要翻译：在制造特别是多通道磁头时，通常将两个铁氧体块彼此放置，间隔构件的插入，以使玻璃在第一接合步骤期间流入所得到的空间，以在所得组件中形成凹槽并且在第二接合步骤期间用玻璃填充填充构件。该方法具有若干缺点，这些缺点是通过在执行进一步的操作之前在铁氧体块和间隔构件之间产生连接而避免，这些连接固定铁氧体块相对于彼此。

29. 发明授权

US2785038A Magnetic transducer 失效
标题翻译：磁性传感器
公开(公告)号：US2785038A
公开(公告)日：1957-03-12
申请号：US29117952
申请日：1952-06-02
申请人： RCA CORP
发明人： FERBER LE ROY W
IPC分类号： G11B5/29
CPC分类号： G11B5/29 , G11B5/295 , Y10T29/49053 , Y10T29/49066 , Y10T29/49069

30. 发明申请

US20080092365A1 Method of manufacturing a head gimbal assembly 失效
标题翻译：头部万向节组件的制造方法
公开(公告)号：US20080092365A1
公开(公告)日：2008-04-24
申请号：US11823242
申请日：2007-06-26
申请人： Kenjirou Watanabe , Yoshio Uematsu , Yousuke Fukumoto , Yohtaroh Ichimura
发明人： Kenjirou Watanabe , Yoshio Uematsu , Yousuke Fukumoto , Yohtaroh Ichimura
IPC分类号： G11B5/127
CPC分类号： G11B5/4826 , Y10T29/49025 , Y10T29/4903 , Y10T29/49032 , Y10T29/49053
摘要： Embodiments of the present invention provide a head gimbal assembly manufacturing method which can attach another magnetic head slider to a suspension to be reused without addition of solder. According to one embodiment of the present invention, a head gimbal assembly (HGA) is attached to a jig. Both sides of a portion close to the rear end of a magnetic head slider are gripped with hot tweezers heated at about 200° C. They are heated for about four seconds while applying force in a direction of peeling off the magnetic head slider from gimbals, thus removing the magnetic head slider from the gimbals. When another magnetic head slider is attached to the suspension, an adhesive adhered to the gimbals is removed and another adhesive is applied to the gimbals. The back of another magnetic head slider is pressed to the adhesive, whereby the magnetic head slider is fixed to the gimbals. Next, the solder fillet left on the gimbals is irradiated with laser beams to be melted and joined to an electric terminal.
摘要翻译：本发明的实施例提供一种头万向架组件制造方法，其可以将另一个磁头滑动器附接到待重新使用的悬架上，而不添加焊料。根据本发明的一个实施例，一种头部万向架组件（HGA）附接到夹具。靠近磁头滑块的后端的部分的两侧用加热到约200℃的热镊子夹紧。它们在沿着从磁头剥离磁头滑块的方向施加力时被加热大约四秒钟，从而将磁头滑块从万向节上移除。当另一个磁头滑块连接到悬架上时，去除粘附到万向架上的粘合剂，并将另一个粘合剂施加到万向架上。将另一个磁头滑块的背面按压到粘合剂上，由此磁头滑块固定在万向节上。接着，用激光束照射留在万向架上的焊锡圆片，使其熔融并接合到电气端子上。

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