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1. 发明公开

EP2617036A1 MAGNETIC RECORDING HEAD HAVING A POLE TIP SHIELD 审中-公开
标题翻译：磁记录头有一个极点头盔
公开(公告)号：EP2617036A1
公开(公告)日：2013-07-24
申请号：EP10857378.3
申请日：2010-09-15
申请人： Seagate Technology LLC
发明人： GAO, Kaizhong , MELOCHE, Eric , XUE, Jianhua , LINVILLE, Eric, S. , HAN, Dehua , YIN, Huaqing
IPC分类号： G11B5/127
CPC分类号： G11B5/193 , G11B5/1278 , G11B5/187 , G11B5/315
摘要： A write element including a pole tip shield is disclosed In embodiments disclosed, for example, the pole tip shield includes side shield portions fabricated of a graded magnetic moment material to form graded side shield portions having a magnetic moment that decreases in the down-track direction along a length of the side shield portions In another embodiment, the pole tip shield includes side shield portions having a shortened length extending along a partial length of side edges of the pole tip In illustrated embodiments, the side shield portions are formed of a contoured body having an indented portion forward of the leading edge of the pole tip. The indented portion has a rounded indented surface contour forming a rounded profile for a gap region between a leading edge portion of the pole tip shield forward of the leading edge of the pole tip.
摘要翻译：包括磁极尖端屏蔽件的写入元件被公开。在所公开的实施例中，例如，磁极尖端屏蔽件包括由渐变磁矩材料制成的侧屏蔽部分，以形成渐变侧屏蔽部分，所述渐变侧屏蔽部分具有沿向下磁道方向沿着侧屏蔽部分的长度延伸。在另一个实施例中，极尖屏蔽件包括侧屏蔽部分，该侧屏蔽部分具有沿着极尖端的侧边缘的部分长度延伸的缩短的长度。在所示实施例中，侧屏蔽部分由成形体在极尖的前缘的前方具有凹入部分。凹入部分具有圆形凹入表面轮廓，其形成圆形轮廓，用于磁极尖端前缘前方的磁极尖端屏蔽的前缘部分之间的间隙区域。

2. 发明授权

EP0795852B1 Magnetic head 失效
标题翻译：磁头
公开(公告)号：EP0795852B1
公开(公告)日：2003-05-14
申请号：EP97104310.4
申请日：1997-03-13
申请人： SONY CORPORATION
发明人： Matsunaga, Toru , Kaneyama, Naoyuki , Saito, Takehiko , Hayakawa, Masatoshi
IPC分类号： G11B5/187 , G11B5/193
CPC分类号： G11B5/1878 , G11B5/1871 , G11B5/193 , G11B33/08

3. 发明公开

EP0795852A3 Magnetic head 失效
标题翻译：磁头
公开(公告)号：EP0795852A3
公开(公告)日：1999-04-07
申请号：EP97104310.4
申请日：1997-03-13
申请人： SONY CORPORATION
发明人： Matsunaga, Toru , Kaneyama, Naoyuki , Saito, Takehiko , Hayakawa, Masatoshi
IPC分类号： G11B5/187 , G11B5/193
CPC分类号： G11B5/1878 , G11B5/1871 , G11B5/193 , G11B33/08
摘要： Sliding noise characteristics can be considerably improved without degrading electromagnetic conversion characteristics and abrasion resistance characteristics in a recording/reproducing operation. A depth (H) of a contact width regulating groove (21) is set to be smaller than a contact width (W) of a magnetic recording medium sliding surface (a), and is set to a predetermined value of 25 µm or more and 45 µm or less. A depth (H) of the contact regulating groove is set to a predetermined value of 37±12 µm, the contact width (W) on the magnetic recording medium sliding surface (a) is set to a predetermined value of 55±6 µm, and a value (R) of a corner portion (51a) of the contact width regulating groove is set to a predetermined value of 16 µm or less.
摘要翻译：在记录/再现操作中，滑动噪声特性可以显着提高而不降低电磁转换特性和耐磨损特性。接触宽度调整槽（21）的深度（H）被设定为小于磁记录介质滑动面（a）的接触宽度（W），并且被设定为25μm或更大的预定值，并且 45微米或更小。接触限制槽的深度（H）被设定为37±12μm的规定值，磁记录介质滑动面（a）的接触宽度（W）被设定为55±6μm的规定值，并且接触宽度调节槽的角部（51a）的值（R）被设定为16μm或更小的预定值。

4. 发明公开

EP0851410A2 Magnetic head 失效
标题翻译：磁头
公开(公告)号：EP0851410A2
公开(公告)日：1998-07-01
申请号：EP97122304.5
申请日：1997-12-17
申请人： SONY CORPORATION
发明人： Tamura, Takashi , Nihei, Yukari , Suzuki, Atsushi , Matsunaga, Toru , Ural, Akira
IPC分类号： G11B5/193
CPC分类号： G11B5/193 , G11B5/133 , G11B5/255
摘要： A magnetic head having excellent abrasion characteristics and a high playback output. The magnetic head is made up of a pair of magnetic core halves (3m,3n) each having a single crystal ferrite (Im,In) at a portion thereof, said magnetic core halves being abutted and joined to each other, with a magnetic gap (g) being formed between abutment surfaces of these magnetic core halves. The single crystal ferrite has its medium sliding surface, slidingly contacted with a magnetic recording medium, as a (411) plane, and also has the abutment surface as a (122) plane.
摘要翻译：具有优异的磨损特性和高重放输出的磁头。磁头由在其一部分具有单晶铁氧体（Im，In）的一对磁芯半体（3m，3n）构成，所述磁芯半体彼此邻接并接合，磁隙（g）形成在这些磁芯半部的邻接表面之间。单晶铁氧体具有其中等滑动表面，与磁记录介质滑动接触，作为（411）平面，并且还具有作为（122）平面的邻接表面。

5. 发明公开

EP0703571A3 Magnetic head 失效
标题翻译：磁头
公开(公告)号：EP0703571A3
公开(公告)日：1996-07-31
申请号：EP95114758.6
申请日：1995-09-19
申请人： SONY CORPORATION
发明人： Suzuki, Atsushi , Hayakawa, Masatoshi , Matsunaga, Toru , Tamaru, Takashi , Urai, Akira
IPC分类号： G11B5/133 , G11B5/193 , G11B5/187
CPC分类号： G11B5/1878 , G11B5/133 , G11B5/1335 , G11B5/1871 , G11B5/193 , G11B5/255
摘要： A magnetic head having a pair of magnetic core halves integrally bonded to each other, each magnetic core half being formed by a single-crystal ferrite piece and a polycrystal ferrite piece bonded together to constitute a junction ferrite, with a magnetic gap being defined between abutting surfaces of the magnetic core halves. The single-crystal ferrite pieces are arranged towards the abutting surfaces of the magnetic core halves and the polycrystal ferrite pieces are arranged on the opposite side of the abutting surfaces with respect to the single-crystal ferrite pieces. Preferably, the surface of the single-crystal ferrite piece having sliding contact with the magnetic recording medium, the gap surface of the single-crystal ferrite piece and the surface of the single-crystal ferrite piece corresponding to the lateral surface of the magnetic head are the (211) plane, (111) plane and the (110) plane, respectively. The directions of the 〈100〉 crystal axes within the plane (100) are symmetrical to each other on both sides of the magnetic gap. The magnetic head is low in sliding noise and superior in electro-magnetic conversion characteristics. In addition, the magnetic recording medium is superior in abrasion characteristics since the partial advancing abrasion is prohibited from occurring on its surface configured to have sliding contact with the magnetic recording medium.
摘要翻译：一种磁头，具有一对彼此整体结合的磁芯半体，每个磁芯半体由结晶在一起构成结型铁氧体的单晶铁氧体片和多晶铁氧体片形成，其间的磁隙限定在邻接磁芯半部的表面。单晶铁氧体片朝向磁芯半部的邻接表面布置，并且多晶铁氧体片相对于单晶铁氧体片布置在邻接表面的相对侧上。优选地，与磁记录介质滑动接触的单晶铁氧体片的表面，单晶铁氧体片的间隙表面以及与磁头的侧表面相对应的单晶铁氧体片的表面是（211）面，（111）面和（110）面。平面（100）内的<100>晶轴的方向在磁隙的两侧彼此对称。磁头滑动噪声低，电磁转换特性优异。另外，由于在与磁记录介质滑动接触的表面上禁止发生部分前进磨损，所以该磁记录介质具有优异的磨损特性。

6. 发明公开

EP0379127A1 Magnetic head and its production method 失效
标题翻译： Magnetkopf und Verfahren zu seiner Herstellung。
公开(公告)号：EP0379127A1
公开(公告)日：1990-07-25
申请号：EP90100785.6
申请日：1990-01-16
申请人： VICTOR COMPANY OF JAPAN, LIMITED
发明人： Koseki, Makoto, 2-221, Victor Shataku , Tsutsui, Takashi, 2-241, Victor Shataku , Kohara, Sohei, , Nemoto, Koji,
IPC分类号： G11B5/127 , G11B5/133
CPC分类号： G11B5/1272 , G11B5/193
摘要： There is disclosed an improvement of a magnetic head including a head core which comprises a first head core half body having a winding goove at one side surface thereof, and a second head core half body having at least one side surface, and in which the side surface of the first body is joined with the side surface of the second body, both bodies being fixed by mold glass about joined planes of the half bodies via a gap spacer having a melting point higher than the mold glass, and one end surface falling at right angle with the joined planes being shaped into an arc state to become a tape sliding surface having a magnetic gap at a joined portion of both bodies. In the configuration, the first half body comprises a back groove formed by cutting out a part nearby the other end surface opposite to the surface on which the sliding surface is formed, and a pair of first track width regulation grooves which are formed by cutting out of both corners of the joined plane thereof in a manner of having a slant of a predetermined angle from a portion nearby the opposite end to a direction of the sliding surface and being across the winding groove. The second half body comprises a pair of second track width regulation grooves cut out of both corners between the joined plane and the sliding surface on a slant of a predetermined angle from the middle the winding groove to the sliding surface. The mold glass is filled into the back groove and the first and second track width regulation grooves in order to fix the first and second half bodies by solidification after cooling.
摘要翻译：公开了一种包括头芯的磁头的改进，头磁芯包括在其一个侧表面上具有绕组沟槽的第一磁头半芯体和具有至少一个侧表面的第二磁头半芯体，第一主体的表面与第二主体的侧表面接合，两个主体通过模具玻璃通过熔化点高于模具玻璃的间隙隔离件将半体的接合平面固定在半体的接合面上，并且一个端面落在与接合平面的直角成形为弧状，成为在两体的接合部具有磁隙的带滑动面。在该结构中，第一半体包括通过切除与形成有滑动面的表面相对的另一端面附近的部分形成的后槽，以及通过切割形成的一对第一轨道宽度调节槽其接合面的两个角部以从相对端附近的一部分向滑动面的方向倾斜预定角度且横过卷绕槽的方式形成。第二半体包括一对第二轨道宽度调节槽，该一对第二轨道宽度调节槽从接合平面和滑动表面之间的两个角度以预定角度从卷绕槽的中部到滑动表面倾斜。将模具玻璃填充到后槽和第一和第二轨道宽度调节槽中，以便在冷却之后固化第一和第二半体。

7. 发明公开

EP0336525A1 Method of forming recessed profile on ferrite single crystal by chemical etching 失效
标题翻译：形成通过化学蚀刻铁素体单晶一个凹陷的轮廓的方法。
公开(公告)号：EP0336525A1
公开(公告)日：1989-10-11
申请号：EP89300126.3
申请日：1989-01-06
申请人： NGK INSULATORS, LTD.
发明人： Takeya, Fuminori, c/o NGK Insulators Ltd. , Fukuda, Naoya , Suzuki, Miki
IPC分类号： C30B33/00 , G11B5/193
CPC分类号： G11B5/193 , C30B29/24 , C30B33/00 , G11B5/10 , G11B5/1871 , Y10T29/49041 , Y10T29/49052
摘要： A method of forming, on a surface of a Mn-Zn ferrite single crystal, a recessed portion which has a predetermined cross sectional profile and at least one straight ridge (15) which defines a boundary in the profile. An etching mask (14) is formed on the surface of the ferrite single crystal, so as to provide the recessed portion by etching such that the straight ridge (15) of the profile lies in a (100) or (110) plane of the ferrite single crystal which is perpendicular to the surface on which the etching mask is formed. The ferrite single crystal with the etching mask is exposed to an aqueous solution which substantially consists of water and the balance consisting principally of phosphoric acid, whereby the surface of the ferrite single crystal is chemically etched, so as to produce the recessed portion such that an inclined surface is formed so as to extend parallel to the straight ridge, and such that the straight ridge defines an edge of the inclined surface.
摘要翻译：形成，一个Mn-Zn铁氧体单晶，凹部具有预定的横截面轮廓和至少一个直脊部（15）的表面上的方法，其在配置文件中定义的边界。的蚀刻掩模（14）是形成在所述铁素体单晶的表面上，以便提供通过蚀刻检查的凹部没有轮廓的直脊部（15）位于的一个（100）或（110）面铁素体单晶所有垂直于在其上蚀刻掩模形成在表面上。与蚀刻掩模的铁素体单晶在wässrige溶液暴露于基本上besteht的水，其余为自由磷酸的原则上，由此铁素体单晶的表面进行化学蚀刻，从而产生凹部调查做在倾斜表面被形成为平行地延伸的直脊，并且这样做的直脊定义在倾斜面的边缘。

8. 发明公开

EP0148628A2 Magnetic head core and method for producing the same 失效
标题翻译：磁头核心和制造工艺。
公开(公告)号：EP0148628A2
公开(公告)日：1985-07-17
申请号：EP84309011.9
申请日：1984-12-21
申请人： NGK INSULATORS, LTD.
发明人： Matsuzawa, Soichiro
IPC分类号： G11B5/133 , G11B5/193 , G11B5/23
CPC分类号： G11B5/133 , G11B5/193 , G11B5/232 , Y10T29/49034 , Y10T29/49048 , Y10T29/49055 , Y10T29/49067
摘要： A magnetic head core consisting of plural core elements (16, 18) of ferrite butted and bonded together through solid-solid reaction so as to form a generally annular magnetic circuit having a magnetic gap (22). At least opposed portions of the magnetic circuit which define the magnetic gap and provide magnetic-medium contacting surfaces are formed of a single crystal of ferrite. At least one (16) of the plural core elements is originally an at least partially monocrystalline block of ferrite including a monocrystalline portion (15) consisting of a ferrite single crystal, and at least one of the opposed portions defining the magnetic gap is monocrystallized as a result of growth of the ferrite single crystal of the monocrystalline portion toward the original ferrite polycrystal of the core elements.

9. 发明公开

EP0116451A2 Magnetic transducer structure having reduced track width and a method of manufacturing thereof 失效
标题翻译： Konstruktive Ausbildung eines Magnetwandlers mit verminderter Spurbreite und Herstellungsverfahren。
公开(公告)号：EP0116451A2
公开(公告)日：1984-08-22
申请号：EP84300703.0
申请日：1984-02-03
申请人： AMPEX CORPORATION
发明人： Schiller, Edward
IPC分类号： G11B5/127 , G11B5/187 , G11B5/193 , G11B5/29
CPC分类号： B29C70/745 , B29C43/18 , G11B5/187 , G11B5/193 , G11B5/295 , Y10T29/49048 , Y10T29/49057
摘要： A transducer and method are described where track width reducing notches are filled with a nonmagnetic material which is heated to or slightly over its softening temperature but below its melting temperature. Concentrated high pressure at discrete locations is applied to the softened nonmagnetic material too enhance flow thereof into the notches.
摘要翻译：描述了一种传感器和方法，其中轨道宽度减小凹口用非磁性材料填充，该非磁性材料被加热到或略高于其软化温度但低于其熔融温度。在离散位置处的浓缩高压施加到软化的非磁性材料上也会增加其进入凹口的流动。

10. 发明公开

EP0088869A2 Thin film techniques for fabricating narrow track ferrite heads 失效
标题翻译：用于制备铁氧体磁头对窄轨道薄膜工艺。
公开(公告)号：EP0088869A2
公开(公告)日：1983-09-21
申请号：EP83100689.5
申请日：1983-01-26
申请人： International Business Machines Corporation
发明人： Anderson, Nathaniel Carl , Daby, Larry Eugene , Gravdahl, Vincent Dean , McCaffrey, Patrick Michael , Murray, Bruce Allen , Wright, Bruce Wayne
IPC分类号： H01F41/14 , G11B5/127
CPC分类号： H01F41/34 , G03F7/00 , G11B5/193
摘要： 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.

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