-
公开(公告)号：US4489357A
公开(公告)日：1984-12-18
申请号：US371039
申请日：1982-04-23
CPC分类号： G11B5/3925 , H01L43/08
摘要： A magnetic sensor (1) includes a magneto-resistive element (3) which magnetically bridges a gap (15) between two magnetic flux conductors (6,7). In order to reduce the noise level and higher harmonic distortion of the sensor, each of the flux conductors (6,7) includes at least two layers (16,18) of magnetically permeable materials having substantially the same composition between which a layer (17) is present which has a different composition.
摘要翻译： 磁传感器（1）包括一磁阻元件（3），该磁阻元件磁耦合两个磁通导体（6,7）之间的间隙（15）。 为了降低传感器的噪声水平和较高的谐波失真，每个磁通导体（6,7）包括至少两层具有基本上相同组成的导磁材料层（16,18），层之间 ），其具有不同的组成。
-
公开(公告)号：US4251842A
公开(公告)日：1981-02-17
申请号：US945295
申请日：1978-09-25
CPC分类号： G11B5/1278 , G11B5/02
摘要： A magnetic recording and reproducing device using a double-layered magnetic recording medium having a first layer with an anisotropy perpendicular to the medium plane and having a second layer with a lower coercive force than the first layer. A single pole magnetic head is arranged so as to magnetize the recording medium in a direction perpendicular to the recording medium plane.
摘要翻译： 一种使用具有垂直于介质平面的各向异性的第一层并具有比第一层低的矫顽力的第二层的双层磁记录介质的磁记录和再现装置。 设置单极磁头，以便在与记录介质平面垂直的方向上磁化记录介质。
-
3.发明授权Thin film magnetic head with a gap formed between a loop shaped core part and a bridging core part 失效在环形芯部和桥接芯部之间形成间隙的薄膜磁头
公开(公告)号：US4085430A
公开(公告)日：1978-04-18
申请号：US648408
申请日：1976-01-12
摘要： A thin-film magnetic head having improved playback properties in which the gap-bounding core parts overlap each other laterally while enclosing a layer having a gap and in which a first core part has the shape of a closed loop and is bridged in the center by a second core part. The parts of the first core part on either side of the bridge are provided with identical coils, while the first core part at the area of the overlap is divided centrally by an extra gap. Upon playing back, the difference signals of the coils then provides an indication as regards the position relative to the track.
摘要翻译： 一种薄膜磁头，其具有改进的重放特性，其中间隙界定的芯部分横向彼此重叠，同时封闭具有间隙的层，并且其中第一芯部分具有闭环的形状并且通过 第二核心部分。 桥的任一侧上的第一芯部分的部分具有相同的线圈，而重叠区域的第一芯部分被中心地分开一个额外的间隙。 在回放时，线圈的差分信号随后提供关于相对于轨道的位置的指示。
-
公开(公告)号：US4016601A
公开(公告)日：1977-04-05
申请号：US598000
申请日：1975-07-22
申请人： Jean-Pierre Lazzari
发明人： Jean-Pierre Lazzari
CPC分类号： G11B5/3163 , G11B5/3116
摘要： The invention concerns an integrated magnetic head adapted to cooperate with a track of a very narrow width, f.i. of about twenty microns, of a recording medium which moves perpendicularly to said width in close proximity to the frontal gap face of the head. The frontal width of the pole-piece layers of the head is reduced after said layers have been formed with a larger width adapted to a normal electromagnetic efficiency of the head in the parts of the said pole-pieces which encase the front branch of its flat conductor winding coil. The reduction is obtained by removal of the lateral parts of the pole-pieces over a predetermined depth with respect to the frontal face. Any registering part of an intervening dielectric layer between the pole-piece layers for defining the magnetic gap of the head is simultaneously removed. It is important that the removal be made by an attack such as a ionic erosion process perpendicularly oriented to the frontal plane of the head. The depth of removal may be of the order of 5 to 6 microns when the reduced width must be about twenty microns and when, further, the ratio of the overall thickness of the pole-piece layers and intervening layer at the frontal face of the gap to the said reduced width is higher than two.
摘要翻译： 本发明涉及一种集成磁头，其适于与非常窄的宽度的轨道f.i协作。 约20微米的记录介质，其垂直于所述宽度移动，靠近头部的正面间隙面。 在所述层已经形成了更大的宽度之后，头部的极片层的正面宽度减小，该宽度适合于在包围其平面的前分支的所述极片的部分中的头部的正常电磁效率 导体绕组线圈。 通过相对于前面移除超过预定深度的极片的侧部来获得还原。 同时去除用于限定磁头的磁隙的极片之间的插入电介质层的任何配准部分。 重要的是通过垂直取向到头部正面的离子侵蚀过程等攻击来进行移除。 当减小的宽度必须为约20微米时，去除的深度可以是5至6微米的量级，而且当进一步地，极片层的总厚度和间隙的正面的中间层的比例 到所述减小的宽度高于2。
-
公开(公告)号：US3900895A
公开(公告)日：1975-08-19
申请号：US40594373
申请日：1973-10-12
申请人： HEWLETT PACKARD CO
IPC分类号： G11B5/105 , G11B5/10 , G11B5/127 , G11B5/187 , G11B5/265 , G11B5/29 , G11B5/27 , G11B5/25 , G11B5/42
摘要： A magnetic read-record head is built on a transducer frame and a return core frame. The transducer frame is made by machining an assembly of two concentric cylindrical members to produce a frame with a central locator bar. Each transducer has a magnetic core with a notch in it and a coil wound around a portion of the core. The core notch fits over the locator bar to align all the transducers in the transducer frame. The return core frame receives magnetic cores in the form of U-shaped clips. After the clips are fastened to the return core frame, the curved portion of the U is removed leaving two rows of return cores. Then the return frame, with the cores, is attached to two transducer frames full of transducers to make a completed multichannel readrecord head.
摘要翻译： 磁记录头构建在换能器框架和返回芯框架上。 传感器框架通过加工两个同心圆柱形构件的组件来制造具有中心定位杆的框架。 每个换能器具有磁芯，其中具有凹口，并且缠绕在磁芯的一部分周围的线圈。 铁芯槽口位于定位杆上，以对准换能器框架中的所有传感器。 返回铁芯框架接收U型夹子形式的磁芯。 在将夹子紧固到返回芯框架之后，U的弯曲部分被移除，留下两排返回芯。 然后，带有芯的返回框架连接到两个充满传感器的换能器框架，以便构成完整的多通道读取记录头。
-
公开(公告)号：US4642718A
公开(公告)日：1987-02-10
申请号：US675574
申请日：1984-11-28
摘要： Given that there is a limit to the extent to which a record head may be excited before its pole tips saturate (gap fuzziness) while overwriting a second set of information signals atop a first set of information signals recorded in a high coercivity recording medium, the present invention concerns the discovery that if the record gap is dimensioned to equal approximately the flux change length that corresponds with a 2 f signal (FCL.sub.2) recorded atop a 1 f signal, i.e. if the record gap is somewhere between about 0.7 and 1.5 times the flux change length associated with the 2 f signal, erasure of the 1 f signal (as well as other signals) will be most effective.
摘要翻译： 鉴于在记录头在其极点饱和（间隙模糊性）之前被激发的程度是有限度的，同时在记录在高矫顽力记录介质中的第一组信息信号的顶部覆盖第二组信息信号， 本发明涉及如下发现：如果记录间隙的尺寸被设计为近似等于与记录在1f信号上方的2f信号（FCL2）相对应的通量变化长度，即如果记录间隙在约0.7和1.5倍之间 与2 f信号相关的通量变化长度，1 f信号的擦除（以及其他信号）将是最有效的。
-
公开(公告)号：US4490760A
公开(公告)日：1984-12-25
申请号：US340367
申请日：1982-01-18
申请人： Nobuyuki Kaminaka , Kenji Kanai , Noboru Nomura
发明人： Nobuyuki Kaminaka , Kenji Kanai , Noboru Nomura
CPC分类号： G11B5/31
摘要： A thin-film magnetic head having a magnetic substrate made from ferrite, iron-aluminum-silicon alloy or like material, and an upper magnetic layer formed on the magnetic substrate with a lower magnetic layer and a conductive layer interposed therebetween. A portion of the upper magnetic layer is jointed to the magnetic substrate while another portion of the upper magnetic layer is jointed to the lower magnetic layer through a non-magnetic layer of SiO.sub.2 or like material constituting a magnetic gap. The lower magnetic layer, magnetic substrate, upper magnetic layer and the non-magnetic layer in combination form a closed magnetic circuit. A groove is defined between the lower magnetic layer and the magnetic substrate, and formed in the side surface of the magnetic substrate adapted to face a magnetic recording medium. The recess is filled with a non-magnetic material such as glass. Accordingly, it is possible to realize a definite pole piece length to permit an improvement in short-wavelength reproduction characteristics.
摘要翻译： 具有由铁氧体，铁 - 铝 - 硅合金等材料制成的磁性基板的薄膜磁头和在磁性基板上形成有较低磁性层和介于其间的导电层的上部磁性层。 上部磁性层的一部分与磁性基板接合，另一部分上部磁性层通过构成磁隙的SiO 2或类似材料的非磁性层与下部磁性层接合。 下磁层，磁性基板，上磁层和非磁性层组合形成闭合磁路。 在下磁性层和磁性基板之间形成凹槽，并且形成在适于面向磁记录介质的磁性基板的侧表面中。 该凹部填充有诸如玻璃之类的非磁性材料。 因此，可以实现确定的极片长度以允许改善短波长再现特性。
-
8.发明授权Magnetic transducer comprising a gap of variable larger dimension for reading and writing data present on a magnetic carrier 失效磁换能器包括用于读取和写入存在于磁性载体上的数据的可变较大尺寸的间隙
公开(公告)号：US4386383A
公开(公告)日：1983-05-31
申请号：US242924
申请日：1981-03-12
CPC分类号： G11B5/2452 , G11B5/3143 , G11B5/3153
摘要： Transducer intended for read/write functions on a magnetic data carrier wherein the data is contained within a plurality of tracks. The transducer includes a magnetic circuit formed by two pole pieces separated by a gap parallel to the carrier, having its larger dimensions perpendicular to the direction of travel of the data of a track and a winding coupled magnetically to this circuit.The larger dimension of the gap varies depending on the nature of the function performed by the transducer. At least one thin layer of magnetic material is deposited across the pole pieces at each outer edge thereof and spaced from each other. The magnetic layers may be deposited in recesses formed in the pole pieces. The pole pieces may be constricted and include thin magnetic layers deposited on the lateral surfaces to channel magnetic flux lines.
摘要翻译： 用于磁数据载体上的读/写功能的传感器，其中所述数据被包含在多个磁道内。 换能器包括由平行于载体的间隔分开的两个极片形成的磁路，其具有垂直于轨道的数据的行进方向的较大的尺寸和与该电路磁耦合的绕组。 间隙的较大尺寸取决于由换能器执行的功能的性质。 磁性材料的至少一个薄层横跨磁极片沉积在其每个外边缘并彼此间隔开。 磁性层可以沉积在形成在极片中的凹槽中。 极片可能是收缩的，并且包括沉积在侧表面上以引导磁通线的薄磁层。
-
公开(公告)号：US4363052A
公开(公告)日：1982-12-07
申请号：US168283
申请日：1980-07-10
申请人： Naohiro Hanaoka
发明人： Naohiro Hanaoka
CPC分类号： G11B5/1278 , G11B11/10 , G11B13/045 , G11B5/00 , G11B5/012 , G11B2005/0021
摘要： A thermomagnetic recording device for recording information on a magnetic recording medium having magnetic anisotropy across the thickness thereof comprises a laser beam irradiation mechanism applying a laser beam to said magnetic recording medium to reduce the coercive force thereof, and a single-pole magnetic head including a ferromagnetic thin membrane having an end face located opposite to said magnetic recording medium, a main body supporting said thin membrane, and a coil applying a perpendicular magnetic field to said recording medium through said end face of said thin membrane.
摘要翻译： 用于在其厚度上具有磁各向异性的磁记录介质上记录信息的热磁记录装置包括激光束照射机构，其将激光束施加到所述磁记录介质以降低其矫顽力;以及单极磁头，包括 具有与所述磁记录介质相对的端面的铁磁薄膜，支撑所述薄膜的主体，以及通过所述薄膜的所述端面向所述记录介质施加垂直磁场的线圈。
-
10.发明授权
公开(公告)号：US4358806A
公开(公告)日：1982-11-09
申请号：US143110
申请日：1980-04-23
申请人： Yoshihiro Arai
发明人： Yoshihiro Arai
IPC分类号： G11B5/74 , G11B5/00 , G11B5/02 , G11B5/127 , G11B5/39 , G11B5/73 , G11B5/738 , G11B15/14 , G11B5/25 , G11B5/20
摘要： A number of blocks made of a high magnetic permeability material are arranged in parallel with a very fine pitch on a non-magnetic substrate. A number of pairs of electrodes are provided to interpose the blocks therebetween. The pairs of electrodes are electrically connected with each other. A magnetic recording layer is provided adjacent to the blocks so that a part thereof is magnetized when the block adjacent thereto is excited. A pair of metal styluses or the like are put into contact with the electrodes and an electric current modulated with information is caused to flow through the styluses to excite the block interposed therebetween and magnetize the magnetic recording layer adjacent thereto when recording information. When reproducing the recorded information, a pair of metal styluses are put into contact with the opposite ends of the block and an electric current is caused flow through the block. The recorded information is read in the form of variation in electric current flowing therethrough or voltage thereacross obtained as the styluses are moved with respect to the recording medium along the direction in which the blocks are arranged.
摘要翻译： 由高磁导率材料制成的多个块在非磁性基板上以非常细的间距平行布置。 提供了多对电极以将块插入其间。 这对电极彼此电连接。 与块相邻地设置磁记录层，使得当与其相邻的块被激发时，其一部分被磁化。 一对金属触针等与电极接触，并且通过触针调制的电流流过触笔以激励插入其间的块，并且当记录信息时磁化与其相邻的磁记录层。 当再现记录的信息时，一对金属探针与块的相对端接触，并且电流流过块。 记录的信息以流过其中的电流的变化的形式读取，或者当触笔相对于记录介质沿着排列方向移动时获得的电压。
-
-
-
-
-
-
-
-
-
搜索结果
46 条记录 (耗时 0.011 秒)