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    • 93. 发明授权
    • Magnetic head
    • 磁头
    • US5734534A
    • 1998-03-31
    • US762721
    • 1996-12-10
    • Tetsuya YamamotoHiroyuki OhmoriYasunari SugiyamaMitsuharu Shouji
    • Tetsuya YamamotoHiroyuki OhmoriYasunari SugiyamaMitsuharu Shouji
    • G11B5/31G11B5/10G11B5/127G11B5/147G11B5/17
    • G11B5/10G11B5/127G11B5/1272G11B5/147G11B5/17
    • A magnetic head is made by fixing together two head halves 9 and 39. Recesses 10 and 40 are formed in glass layers 4 and 34 on the substrates 1 and 31 respectively of the head halves, and spiral coil patterns 11 and 41 are formed in the recesses. Apart from their inner end portions 11a and 41a the coil patterns are covered by insulating protective films 23 and 53. A plurality of sloping surfaces 4b, 34b are formed on the glass layers 4 and 34 at the locations of the inner end portions of the coil patterns, whereby a plurality of projections 4a, 34a are formed. The angle of slope .theta. of the sloping surfaces is above 30.degree. and below 90.degree.. The coil patterns 11 and 41 comprise copper plating layers 19 and 39; because the coil pattern inner end portions lie on the projections 4a, 34a their surfaces are high and exposed at the surfaces of the insulating protective films 23, 53, and gold films 16 and 46 are formed thereon. These gold films connect to each other and connect the coil patterns 11 and 41 to form one coil.
    • 磁头通过将两个半部分9和39固定在一起而形成。凹部10和40分别形成在前半部分的基板1和31上的玻璃层4和34中,螺旋线圈图案11和41形成在 凹槽 除了它们的内端部11a和41a之外,线圈图案被绝缘保护膜23和53覆盖。在线圈的内端部分的位置处,在玻璃层4和34上形成多个倾斜表面4b,34b 由此形成多个突起4a,34a。 倾斜面的倾角θ在30°以上,90°以下。 线圈图案11和41包括镀铜层19和39; 由于线圈图案内端部位于突出部4a,34a上,所以表面高,露出在绝缘保护膜23,53的表面,金膜16,46形成在其上。 这些金膜彼此连接并且连接线圈图案11和41以形成一个线圈。
    • 97. 发明授权
    • E-type magnetic head for magneto-optical recording device
    • 用于磁光记录装置的E型磁头
    • US5572490A
    • 1996-11-05
    • US349233
    • 1994-12-05
    • Toshio Kazama
    • Toshio Kazama
    • G11B5/02G11B5/127G11B5/17G11B11/105G11B11/00G11B5/60
    • G11B11/10534
    • In a magnetic head apparatus that generates a strong magnetic field of magneto-optical recording or the like, a joint assembly of main and side cores is fitted into an accommodating groove formed in a ceramic slider, and a bobbin having a coil wound around it is fitted onto the main core. Further, a back core is fastened to the main and side coils. An electrical insulating layer extending along the dimension of the magnetic path is formed in the main core to divide conductive region by the sections of the main core. Thus, the eddy current generated along a dimension perpendicular to the magnetic path is suppressed, whereby the core loss is mitigated and the quantity of heat generated in the core is reduced.
    • 在产生磁光记录等的强磁场的磁头装置中,主芯和侧芯的接合组件装配在形成在陶瓷滑块中的容纳槽中,并且缠绕有线圈的线圈是线圈 安装在主芯上。 此外,后芯被固定到主线圈和侧线圈。 在主芯中形成沿着磁路的尺寸延伸的电绝缘层,以通过主芯的部分分隔导电区域。 因此,沿着垂直于磁路的尺寸产生的涡电流被抑制,从而减轻了磁芯损耗并减小了磁芯中产生的热量。
    • 98. 发明授权
    • Method of manufacturing a multiple track thin film recording head
    • 制造多轨薄膜记录头的方法
    • US5546650A
    • 1996-08-20
    • US263828
    • 1994-06-22
    • Richard H. Dee
    • Richard H. Dee
    • G11B5/127G11B5/17G11B5/29G11B5/31G11B5/39G11B5/48G11B5/42
    • G11B5/127G11B5/17G11B5/29G11B5/3103G11B5/3106G11B5/313G11B5/3153G11B5/4893G11B5/3967Y10T29/49048Y10T29/49055Y10T29/49064
    • A method of manufacturing a thin-film magnetic head having a write element capable of producing a magnetic flux density sufficient to write the high coercivity magnetic tapes at high track density. The manufacturing process requires a minimum number of lithographic steps, thereby increasing the yield of the multiple track magnetic head module. A trench is cut into the ferrite substrate material and filled with an insulator to produce a more efficient write element. A recess is then formed in the ferrite substrate having a geometry sufficient to hold a deposited thin-film conductive coil below the surface of the ferrite substrate. An insulator is then deposited on the ferrite substrate to form a gap spacer as well as to insulate the conductive thin-film coils from the ferrite substrate. The conductive thin-film coil is then deposited on the ferrite substrate in the recesses. A high-saturation flux density magnetic material is deposited on a planar nonmagnetic closure section and formed into separate magnetic pole pieces for each individual track. The magnetic pole pieces are then insulated from each other to produce a closure section having a planar surface matable with the ferrite substrate. The closure section is attached to the substrate by aligning the metal pole piece on the closure section is attached to the substrate by aligning the metal pole piece on the closure section. The magnetic pole piece is positioned in the front gap and has a width which defines the track width on the magnetic tape. The magnetic pole piece is also positioned to substantially cover the back gap region to increase the flux density existing at the front gap region.
    • 一种具有写入元件的薄膜磁头的制造方法,该写入元件能够产生足以以高磁道密度写入高矫顽力磁带的磁通密度。 制造过程需要最少数量的光刻步骤,从而提高多轨磁头模块的产量。 将一个沟槽切割成铁氧体衬底材料并填充绝缘体以产生更有效的写元件。 然后在铁氧体衬底中形成具有足以将沉积的薄膜导电线圈保持在铁氧体衬底的表面下方的凹槽。 然后将绝缘体沉积在铁氧体衬底上以形成间隙隔离物,并使导电薄膜线圈与铁氧体衬底绝缘。 然后将导电薄膜线圈沉积在凹槽中的铁氧体衬底上。 高饱和磁通密度磁性材料沉积在平面非磁性闭合部分上,并形成为每个独立磁道的单独的磁极片。 然后将磁极片彼此绝缘以产生具有与铁氧体衬底配合的平坦表面的封闭部分。 通过将闭合部分上的金属极片对准在封闭部分上的金属极片,将封闭部分附接到基板上,该金属极片附接到基板。 磁极片位于前间隙中,具有限定磁带上的轨道宽度的宽度。 磁极片也被定位成基本上覆盖背隙区域以增加存在于前间隙区域处的通量密度。